*options.txt*   For Vim version 5.8.  Last change: 2001 Feb 27


		  VIM REFERENCE MANUAL    by Bram Moolenaar


Options							*options*

1. Setting options			|set-option|
2. Automatically setting options	|auto-setting|
3. Saving settings			|save-settings|
4. Options summary			|option-summary|

For an overview of options see help.txt |option-list|.

Vim has a number of internal variables and switches which can be set to
achieve special effects.  These options come in three forms:
	boolean		can only be on or off		*boolean* *toggle*
	number		has a numeric value
	string		has a string value

==============================================================================
1. Setting options					*set-option*

							*:se* *:set*
:se[t]			Show all options that differ from their default value.

:se[t] all		Show all but terminal options.

:se[t] termcap		Show all terminal options.  Note that in the GUI the
			key codes are not shown, because they are generated
			interally and can't be changed.  Changing the terminal
			codes in the GUI is not useful either...

:se[t] {option}?	Show value of {option}.

:se[t] {option}		Toggle option: set, switch it on.
			Number option: show value.
			String option: show value.

:se[t] no{option}	Toggle option: Reset, switch it off.

:se[t] {option}!   or
:se[t] inv{option}	Toggle option: Invert value. {not in Vi}

:se[t] {option}&	Reset option to its default value. {not in Vi}

:se[t] all&		Set all options, except terminal options, to their
			default value.  The values of 'term', 'lines' and
			'columns' are not changed. {not in Vi}

:se[t] {option}={value}		or
:se[t] {option}:{value}
			Set string or number option to {value}.
								*:set-args*
			For numeric options the value can be given in decimal,
			hex (preceded with 0x) or octal (preceded with '0')
			(hex and octal are only available for machines which
			have the strtol() function).
			The old value can be inserted by typing 'wildchar' (by
			default this is a <Tab> or CTRL-E if 'compatible' is
			set).  See |cmdline-completion|.
			White space between {option} and '=' is allowed and
			will be ignored.  White space between '=' and {value}
			is not allowed.
			See |option-backslash| for using white space and
			backslashes in {value}.

:se[t] {option}+={value}				*:set+=*
			Add the {value} to a number option, or append the
			{value} to a string option.  When the option is a
			comma separated list, a comma is added, unless the
			value was empty.  There is no check for doubled
			values.  You can avoid this by removing a value first.
			Example:
>				set guioptions-=T guioptions+=T
			Also see |:set-args| above.

:se[t] {option}^={value}				*:set^=*
			Multiply the {value} to a number option, or prepend
			the {value} to a string option.  When the option is a
			comma separated list, a comma is added, unless the
			value was empty.
			Also see |:set-args| above.

:se[t] {option}-={value}				*:set-=*
			Subtract the {value} from a number option, or remove
			the {value} from a string option, if it is there.
			If the {value} is not found in a string option, there
			is no error or warning.  When the option is a comma
			separated list, a comma is deleted, unless the option
			becomes empty.
			Also see |:set-args| above.

:bro[wse] se[t]			*:set-browse* *:browse-set* *:opt* *:options*
:opt[ions]		Open a window for viewing and setting all options.
			Options are grouped by function.
			Offers short help for each option.  Hit <CR> on the
			short help to open a help window with more help for
			the option.
			Modify the value of the option and hit <CR> on the
			"set" line to set the new value.  For window and
			buffer specific options, the last accessed window is
			used to set the option value in, unless this is a help
			window, in which case the window below help window is
			used (skipping the option-window).
			{not available when compiled without the |+eval| or
			|+autocmd| features}

The {option} arguments to ":set" may be repeated.  For example:
>  :set ai nosi sw=3 ts=3
If you make an error in one of the arguments, an error message will be given
and the following arguments will be ignored.

For {option} the form "t_xx" may be used to set a termcap option.  This will
override the value from the termcap.  You can then use it in a mapping.  If
the "xx" part contains special characters, use the <t_xx> form:
	:set <t_#4>=^[Ot

The listing from ":set" looks different from Vi.  Long string options are put
at the end of the list.  The number of options is quite large.  The output of
"set all" probably does not fit on the screen, causing Vim to give the
|more-prompt|.

							*option-backslash*
To include white space in a string option value it has to be preceded with a
backslash.  To include a backslash you have to use two.  Effectively this
means that the number of backslashes in an option value is halved (rounded
down).
A few examples:
>  :set tags=tags\ /usr/tags	    results in "tags /usr/tags"
>  :set tags=tags\\,file	    results in "tags\,file"
>  :set tags=tags\\\ file	    results in "tags\ file"

For MS-DOS and WIN32 backslashes in file names are mostly not removed.  More
precise: For options that expect a file name (those where environment
variables are expanded) a backslash before a normal file name character is not
removed.  But a backslash before a special character (space, backslash, comma,
etc.) is used like explained above.
There is one special situation, when the value starts with "\\":
>  :set dir=\\machine\path	    results in "\\machine\path"
>  :set dir=\\\\machine\\path	    results in "\\machine\path"
>  :set dir=\\path\\file	    results in "\\path\file" (wrong!)
For the first one the start is kept, but for the second one the backslashes
are halved.  This makes sure it works both when you expect backslashes to be
halved and when you expect the backslashes to be kept.  The third gives a
result which is probably not what you want.  Avoid it.

				*add-option-flags* *remove-option-flags*
Some options are a list of flags.  When you want to add a flag to such an
option, without changing the existing ones, you can do it like this:
>  :set guioptions+=a
Remove a flag from an option like this:
>  :set guioptions-=a
This removes the 'a' flag from 'guioptions'.
Note that you should add or remove one flag at a time.  If 'guioptions' has
the value "ab", using "set guioptions-=ba" won't work, because the string "ba"
doesn't appear.

			   *:set_env* *expand-env* *expand-environment-var*
Environment variables in most string options will be expanded.  If the
environment variable exists the '$' and the following environment variable
name is replaced with its value.  If it does not exist the '$' and the name
are not modified.  Any non-id character (not a letter, digit or '_') may
follow the environment variable name.  That character and what follows is
appended to the value of the environment variable.  Examples:
>  :set term=$TERM.new
>  :set path=/usr/$INCLUDE,$HOME/include,.

								*$HOME*
Using "~" is like using "$HOME", but it is only recognized at the start of an
option and after a space or comma.

On Unix systems "~user" can be used too.  It is replaced by the home directory
of user "user".  Example:
>   :set path=~mool/include,/usr/include,.

On Unix systems the form "${HOME}" can be used too.  The name between {} can
contain non-id characters then.  Note that if you want to use this for the
"gf" command, you need to add the '{' and '}' characters to 'isfname'.

								*$VIM*
The environment variable "$VIM" is used to locate various user files for Vim,
such as the user startup script ".vimrc".  This depends on the system, see
|startup|.

To avoid the need for every user to set the $VIM environment variable, Vim
will try to get the value for $VIM in this order:
1. The value defined by the $VIM environment variable.  You can use this to
   make Vim look in a specific directory for its support files.  Example:
>	setenv VIM /home/paul/vim
2. The path from 'helpfile' is used, unless it contains some environment
   variable too (the default is "$VIMRUNTIME/doc/help.txt": chicken-egg
   problem).  The file name ("help.txt" or any other) is removed.  Then
   trailing directory names are removed, in this order: "doc", "runtime" and
   "vim{version}" (e.g., "vim54").
3. For MSDOS, Win32 and OS/2 Vim tries to use the directory name of the
   executable.  If it ends in "/src", this is removed.  This is useful if you
   unpacked the .zip file in some directory, and adjusted the search path to
   find the vim executable.  Trailing directory names are removed, in this
   order: "runtime" and "vim{version}" (e.g., "vim54").
4. For Unix the compile-time defined installation directory is used (see the
   output of ":version").

Once Vim has done this once, it will set the $VIM environment variable.  To
change it later, use a ":let" command like this:
>	let $VIM = "/home/paul/vim/"

								*$VIMRUNTIME*
The environment variable "$VIMRUNTIME" is used to locate various support
files, such as the on-line documentation and files used for syntax
highlighting.  For example, the main help file is normally
"$VIMRUNTIME/doc/help.txt".
You don't normally set $VIMRUNTIME youself, but let Vim figure it out.  This
is the order used to find the value of $VIMRUNTIME:
1. If the environment variable $VIMRUNTIME is set, it is used.  You can use
   this when the runtime files are in an unusual location.
2. If "$VIM/vim{version}" exists, it is used.  {version} is the version
   number of Vim, without any '-' or '.'.  For example: "$VIM/vim54".  This is
   the normal value for $VIMRUNTIME.
3. If "$VIM/runtime" exists, it is used.
4. The value of $VIM is used.  This is for backwards compatibility with older
   versions.
5. When the 'helpfile' option is set and doesn't contain a '$', its value is
   used, with "doc/help.txt" removed from the end.

For Unix, when there is a compiled-in default for $VIMRUNTIME (check the
output of ":version"), steps 2, 3 and 4 are skipped, and the compiled-in
default is used after step 5.  This means that the compiled-in default
overrules the value of $VIM.  This is useful if $VIM is "/etc" and the runtime
files are in "/user/share/vim/vim54".

Once Vim has done this once, it will set the $VIMRUNTIME environment variable.
To change it later, use a ":let" command like this:
>	let $VIMRUNTIME = "/home/piet/vim/vim54"


Note the maximum length of an expanded option is limited.  How much depends on
the system, mostly it is something like 256 or 1024 characters.

							*:fix* *:fixdel*
:fix[del]		Set the value of 't_kD':
				't_kb' is     't_kD' becomes	~
				  CTRL-?	CTRL-H
				not CTRL-?	CTRL-?

			(CTRL-? is 0177 octal, 0x7f hex) {not in Vi}

			If your delete key terminal code is wrong, but the
			code for backspace is alright, you can put this in
			your .vimrc:
>				:fixdel
			This works no matter what the actual code for
			backspace is.

			If the backspace key terminal code is wrong you can
			use this:
>				:if &term == "termname"
>				:  set t_kb=^V<BS>
>				:  fixdel
>				:endif
			Where "^V" is CTRL-V and "<BS>" is the backspace key
			(don't type four characters!).  Replace "termname"
			with your terminal name.

			If your <Delete> key sends a strange key sequence (not
			CTRL-? or CTRL-H) you cannot use ":fixdel".  Then use:
>				:if &term == "termname"
>				:  set t_kD=^V<Delete>
>				:endif
			Where "^V" is CTRL-V and "<Delete>" is the delete key
			(don't type eight characters!).  Replace "termname"
			with your terminal name.

							*Linux-backspace*
			Note about Linux: By default the backspace key
			produces CTRL-?, which is wrong.  You can fix it by
			putting this line in your rc.local:
>				echo "keycode 14 = BackSpace" | loadkeys

							*NetBSD-backspace*
			Note about NetBSD: If your backspace doesn't produce
			the right code, try this this:
>				xmodmap -e "keycode 22 = BackSpace"
			If this works, add this in your .Xmodmap file:
>				keysym 22 = BackSpace
			You need to restart for this to take effect.

==============================================================================
2. Automatically setting options			*auto-setting*

Besides changing options with the ":set" command, there are three alternatives
to set options automatically for one or more files:

1. When starting Vim initializations are read from various places.  See
   |initialization|.  Most of them are performed for all editing sessions,
   and some of them depend on the directory where Vim is started.
2. If you start editing a new file, the automatic commands are executed.
   This can be used to set options for files matching a particular pattern and
   many other things.  See |autocommand|.
3. If you start editing a new file, and the 'modeline' option is on, a
   number of lines at the beginning and end of the file are checked for
   modelines.  This is explained here.

						*modeline* *vim:* *vi:* *ex:*
There are two forms of modelines.  The first form:
	[text]{white}{vi:|vim:|ex:}[white]{options}

[text]		any text or empty
{white}		at least one white space (<Space> or <Tab>)
{vi:|vim:|ex:}	the string "vi:", "vim:" or "ex:"
[white]		optional white space
{options}	a list of option settings, separated with white space or ':',
		where each part between ':' is the argument for a ":set"
		command

Example:
>  vi:noai:sw=3 ts=6

The second form (this is compatible with some versions of Vi):

	[text]{white}{vi:|vim:|ex:}[white]set {options}:[text]

[text]		any text or empty
{white}		at least one white space (<Space> or <Tab>)
{vi:|vim:|ex:}	the string "vi:", "vim:" or "ex:"
[white]		optional white space
set		the string "set " (note the space)
{options}	a list of options, separated with white space, which is the
		argument for a ":set" command
:		a colon
[text]		any text or empty

Example:
>  /* vim: set ai tw=75: */

The white space before {vi:|vim:|ex:} is required.  This minimizes the chance
that a normal word like "lex:" is caught.  There is one exception: "vi:" and
"vim:" can also be at the start of the line (for compatibility with version
3.0).  Using "ex:" at the start of the line will be ignored (this could be
short for "example:").

The number of lines that are checked can be set with the 'modelines' option.
If 'modeline' is off or 'modelines' is 0 no lines are checked.

Note that for the first form all of the rest of the line is used, thus a line
like:
>  /* vi:ts=4: */
will give an error message for the trailing "*/".  This line is OK:
>  /* vi:set ts=4: */

If an error is detected the rest of the line is skipped.

If you want to include a ':' in a set command precede it with a '\'.  The
backslash in front of the ':' will be removed.  Example:
>  /* vi:set dir=c\:\tmp: */
This sets the 'dir' option to "c:\tmp".  Only a single backslash before the
':' is removed.  Thus to include "\:" you have to specify "\\:".

No other commands than "set" are supported, for security reasons (somebody
might create a Trojan horse text file with modelines).

==============================================================================
3. Saving settings					*save-settings*

							*:mk* *:mkexrc*
:mk[exrc] [file]	Write current key mappings and changed options to
			[file] (default ".exrc" in the current directory),
			unless it already exists.  {not in Vi}

:mk[exrc]! [file]	Always write current key mappings and changed
			options to [file] (default ".exrc" in the current
			directory).  {not in Vi}

							*:mkv* *:mkvimrc*
:mkv[imrc][!] [file]	Like ":mkexrc", but the default is ".vimrc" in the
			current directory.  The ":version" command is also
			written to the file.  {not in Vi}

							*:mks* *:mksession*
:mks[ession][!] [file]	Like ":mkvimrc", but write commands to the end of the
			file that reload the files being edited at the time of
			the command.  |session-file|
			The default file name is "Session.vim".
			The created file can be loaded with a |:source|
			command to recreate the current edit session.
			{not in Vi} {only when compiled with the |+mksession|
			feature enabled}

These commands will write ":map" and ":set" commands to a file, in such a way
that when these commands are executed, the current key mappings and options
will be set to the same values.  The options 'columns', 'endofline',
'fileformat', 'key', 'lines', 'modified', 'scroll', 'term', 'textmode',
'ttyfast' and 'ttymouse' are not included, because these are terminal or file
dependent.  Note that the options 'binary', 'paste' and 'readonly' are
included, this might not always be what you want.

When special keys are used in mappings, The 'cpoptions' option will be
temporarily made empty, to avoid the mappings to be misinterpreted.  This
makes the file incompatible with Vi, but makes sure it can be used with
different terminals.

A common method is to use a default ".vimrc" file, make some modifications
with ":map" and ":set" commands and write the modified file.  First read the
default ".vimrc" in with a command like ":source ~piet/.vimrc.Cprogs", change
the settings and then save them in the current directory with ":mkvimrc!".  If
you want to make this file your default .vimrc, move it to your home directory
(on Unix), s: (Amiga) or $VIM directory (MS-DOS).  You could also use
autocommands |autocommand| and/or modelines |modeline|.

If you only want to add a single option setting to your vimrc, you can use
these steps:
1. Edit your vimrc file with Vim.
2. Play with the option until it's right.  E.g., try out different values for
   'guifont'.
3. Append a line to set the value of the option, using the expression register
   '=' to enter the value.  E.g., for the 'guifont' option:
>  o:set guifont=<C-R>=&guifont<CR><Esc>
   [<C-R> is a CTRL-R, <CR> is a return, <Esc> is the escape key]

Note that when you create a .vimrc file, this can influence the 'compatible'
option, which has several side effects.  See |'compatible'|.
":mkvimrc", ":mkexrc" and ":mksession" write the command to set or reset the
'compatible' option to the output file first, because of these side effects.

						    *session-file*
You can use session files to quickly switch between different projects,
automatically loading the files you were last working on in that project.
Session files are a nice addition to viminfo-files, which are used to remember
information for all sessions together |viminfo-file|.

The output of ":mksession" is like ":mkvimrc", but additional commands are
added to the file.  Which ones depends on the 'sessionoptions' option.  The
resulting file, when executed with a ":source" command:
1. Restores mappings and options, if 'sessionoptions' contains "options".
2. Restores global variables that start with an uppercase letter and contain
   at least one lowercase letter, if 'sessionoptions' contains "globals".
3. Unloads all currently loaded buffers.
4. Restores the working directory.
5. Restores GUI vim window position, if 'sessionoptions' contains "winpos".
6. Restores screen height, if 'sessionoptions' contains "resize".
7. Reloads the files you were editing, at the lines where you left them.  If
   'sessionoptions' contains "buffers" then all buffers are restored,
   including hidden and unloaded buffers.  Otherwise only buffers in windows
   are restored.
8. Restores windows, if 'sessionoptions' contains "winsize".
   If the Vim window size has been restored or is already the same as in the
   loaded session, the window sizes are restored exactly.  Otherwise, the
   windows are just given sensible sizes
9. If a file exists with the same name as the session file, but ending in
   "x.vim" (for eXtra), executes that as well.  You can use *x.vim files to
   specify additional settings and actions associated with a given session,
   such as creating menu items in the GUI version.

The full filename of your current session is available in the internal
variable "v:this_session".  See |this_session-variable|.

So an example mapping might be (all one line):
>  :nmap <S-F1> :wa<Bar>exe "mksession! " . v:this_session<CR>:so $VIM/sessions/
which saves the files and session, and starts off the command to load another.

==============================================================================
4. Options summary					*option-summary*

In the list below all the options are mentioned with their full name and with
an abbreviation if there is one.  Both forms may be used.

In this document when a boolean option is "set" that means that ":set option"
is entered.  When an option is "reset", ":set nooption" is used.

For some options there are two default values: The "Vim default", which is
used when 'compatible' is not set, and the "Vi default", which is used when
'compatible' is set.

Most options are the same in all windows and buffers.  There are a few that
are specific to how the text is presented in a window.  These can be set to a
different value in each window.  For example the 'list' option can be set in
one window and reset in another for the same text, giving both types of view
at the same time.  There are a few options that are specific to a certain
file.  These can have a different value for each file or buffer.  For example
the 'textwidth' option can be 78 for a normal text file and 0 for a C
program.

	global			one option for all buffers and windows
	local to window		each window has its own copy of this option
	local to buffer		each buffer has its own copy of this option

When creating a new window the option values from the currently active window
are used as a default value for the window-specific options.  For the
buffer-specific options this depends on the 's' and 'S' flags in the
'cpoptions' option.  If 's' in included (which is the default) the values for
buffer options are copied from the currently active buffer when a buffer is
first entered.  If 'S' is present the options are copied each time the buffer
is entered, this is almost like having global options.  If 's' and 'S' are not
present, the options are copied from the currently active buffer when the
buffer is created.

A jump table for the options with a short description can be found at |X_op|.

					*'aleph'* *'al'* *aleph* *Aleph*
'aleph' 'al'		number	(default 128 for MS-DOS, 224 otherwise)
			global
			{not in Vi}
			{only available when compiled with the |+rightleft|
			feature}
	The ASCII code for the first letter of the Hebrew alphabet.  The
	routine that maps the keyboard in Hebrew mode, both in Insert mode
	(when hkmap is set) and on the command-line (when hitting CTRL-_)
	outputs the Hebrew characters in the range [aleph..aleph+26].
	aleph=128 applies to PC code, and aleph=224 applies to ISO 8859-8.
	See |rightleft.txt|.

			*'allowrevins'* *'ari'* *'noallowrevins'* *'noari'*
'allowrevins' 'ari'	boolean	(default off)
			global
			{not in Vi}
			{only available when compiled with the |+rightleft|
			feature}
	Allow CTRL-_ in Insert and Command-line mode.  This is default off, to
	avoid that users that accidentally type CTRL-_ instead of SHIFT-_ get
	into reverse Insert mode, and don't know how to get out.  See
	'revins'.
	NOTE: This option is reset when 'compatible' is set.

			 *'altkeymap'* *'akm'* *'noaltkeymap'* *'noakm'*
'altkeymap' 'akm'	boolean (default off)
			global
			{not in Vi}
			{only available when compiled with the |+farsi|
			feature}
	When on, the second language is Farsi. In editing mode CTRL-_ toggles
	the keyboard map between Farsi and English, when 'allowrevins' set.

	When off, the keyboard map toggles between Hebrew and English. This
	is useful to start the vim in native mode i.e. English (left-to-right
	mode) and have default second language Farsi or Hebrew (right-to-left
	mode).  See |farsi.txt|.

			*'autoindent'* *'ai'* *'noautoindent'* *'noai'*
'autoindent' 'ai'	boolean	(default off)
			local to buffer
	Copy indent from current line when starting a new line (typing <CR>
	in Insert mode or when using the "o" or "O" command).  If you do not
	type anything on the new line except <BS> and then type <Esc> or
	<CR>, the indent is deleted again.  When autoindent is on,
	formatting (with the "gq" command or when you reach 'textwidth' in
	Insert mode) uses the indentation of the first line.   When
	'smartindent' or 'cindent' is on the indent is changed in specific
	cases.  The 'autoindent' option is reset when the 'paste' option is
	set.  {small difference from Vi: After the indent is deleted when
	typing <Esc> or <CR>, the cursor position when moving up or down is
	after the deleted indent; Vi puts the cursor somewhere in the deleted
	indent}.

				 *'autowrite'* *'aw'* *'noautowrite'* *'noaw'*
'autowrite' 'aw'	boolean	(default off)
			global
	Write the contents of the file, if it has been modified, on each
	:next, :rewind, :previous, :stop, :suspend, :tag, :!, :make, CTRL-]
	and CTRL-^ command; and when a CTRL-O, CTRL-I, '{A-Z0-9}, or `{A-Z0-9}
	command takes one to another file.

							*'background'* *'bg'*
'background' 'bg'	string	(default "dark" or "light")
			global
			{not in Vi}
	When set to "dark", Vim will try to use colors that look good on a
	dark background.  When set to "light", Vim will try to use colors that
	look good on a light background.  Any other value is illegal.
	Vim tries to set the default value according to the terminal used.
	This will not always be correct.
	Setting this option does not change the background color, it tells Vim
	what the backround color looks like.  For changing the background
	color, see |:hi-normal|.
	When starting the GUI, the default value for 'background' will be
	"light".  When the value is not set in the .gvimrc, and Vim detects
	that the background is actually quite dark, 'background' is set to
	"dark".  But this happens only AFTER the .gvimrc file has been read
	(because the window needs to be opened to find the actual background
	color).  To get around this, force the GUI window to be opened by
	putting a ":gui" command in the .gvimrc file, before where the value
	of 'background' is used (e.g., before ":syntax on").
	For the Win32 GUI, setting 'background' before starting the GUI, will
	change the background and foreground colors to lightgrey on black or
	black on white.  On other systems setting 'background' does not
	change the foreground or background colors.
	Normally this option would be set in the .vimrc file.  Possibly
	depending on the terminal name.  Example:
>		if &term == "pcterm"
>		  set background=dark
>		endif
	When this option is set, the default settings for the highlight groups
	will change.  To use other settings, place ":highlight" commands AFTER
	the setting of the 'background' option.
	This option is also used in the "$VIMRUNTIME/syntax/syntax.vim" file
	to select the colors for syntax highlighting.  After changing this
	option, you must load syntax.vim again to see the result.  This can be
	done with ":syntax on".

							*'backspace'* *'bs'*
'backspace' 'bs'	string	(default "")
			global
			{not in Vi}
	Influences the working of <BS>, <Del>, CTRL-W and CTRL-U in Insert
	mode.  This is a list of items, separated by commas.  Each item allows
	a way to backspace over something:
	value	effect  ~
	indent  allow backspacing over autoindent
	eol	allow backspacing over line breaks (join lines)
	start	allow backspacing over the start of insert; CTRL-W and CTRL-U
		stop once at the start of insert.

	When the value is empty, Vi compatible backspacing is used.

	For backwards compatibility with version 5.4 and earlier:
	value	effect  ~
	  0	same as "" (Vi compatible)
	  1	same as "indent,eol"
	  2	same as "indent,eol,start"

	See |:fixdel| if your <BS> or <Del> key does not do what you want.
	NOTE: This option is set to "" when 'compatible' is set.

				*'backup'* *'bk'* *'nobackup'* *'nobk'*
'backup' 'bk'		boolean	(default off)
			global
			{not in Vi}
	Make a backup before overwriting a file.  Leave it around after the
	file has been successfully written.  If you do not want to keep the
	backup file, but you do want a backup while the file is being
	written, reset this option and set the 'writebackup' option (this is
	the default).  If you do not want a backup file at all reset both
	options (use this if your file system is almost full).  See the
	|backup-table| for more explanations.
	NOTE: This option is reset when 'compatible' is set.

						*'backupdir'* *'bdir'*
'backupdir' 'bdir'	string	(default for Amiga: ".,t:",
				 for MS-DOS and Win32: ".,c:/tmp,c:/temp"
				 for Unix: ".,~/tmp,~/")
			global
			{not in Vi}
	List of directories for the backup file, separated with commas.
	- The backup file will be created in the first directory in the list
	  where this is possible.
	- Empty means that no backup file will be created ('patchmode' is
	  impossible!).
	- A directory "." means to put the backup file in the same directory
	  as the edited file.
	- A directory starting with "./" (or ".\" for MS-DOS et.al.) means to
	  put the backup file relative to where the edited file is.  The
	  leading "." is replaced with the path name of the edited file.
	  ("." inside a directory name has no special meaning).
	- Spaces after the comma are ignored, other spaces are considered part
	  of the directory name.  To have a space at the start of a directory
	  name, precede it with a backslash.
	- To include a comma in a directory name precede it with a backslash.
	- A directory name may end in an '/'.
	- Environment variables are expanded |:set_env|.
	- Careful with '\' characters, type one before a space, type two to
	  get one in the option (see |option-backslash|), for example:
>	    :set bdir=c:\\tmp,\ dir\\,with\\,commas,\\\ dir\ with\ spaces
	- For backwards compatibility with Vim version 3.0 a '>' at the start
	  of the option is removed.
	See also 'backup' and 'writebackup' options.
	If you want to hide your backup files on Unix, consider this value:
>		:set backupdir=./.backup,~/.backup,.,/tmp
	You must create a ".backup" directory in each directory and in your
	home directory for this to work properly.
	The use of |:set+=| and |:set-=| is preferred when adding or removing
	directories from the list.  This avoids problems when a future version
	uses another default.

						*'backupext'* *'bex'*
'backupext' 'bex'	string	(default "~", for VMS: "_")
			global
			{not in Vi}
	String which is appended to a file name to make the name of the
	backup file.  The default is quite unusual, because this avoids
	accidentally overwriting existing files with a backup file.  You might
	prefer using ".bak", but make sure that you don't have files with
	".bak" that you want to keep.

				     *'binary'* *'bin'* *'nobinary'* *'nobin'*
'binary' 'bin'		boolean	(default off)
			local to buffer
			{not in Vi}
	This option should be set before editing a binary file.  You can also
	use the "-b" Vim argument.  When this option is switched on a few
	options will be changed (also when it already was on):
		'textwidth'  will be set to 0
		'wrapmargin' will be set to 0
		'modeline'   will be off
		'expandtab'  will be off
	Also, 'fileformat' and 'fileformats' options will not be used, the
	file is read and written like 'fileformat' was "unix" (a single <NL>
	separates lines).
	NOTE: When you start editing a(nother) file while the 'bin' option is
	on, settings from autocommands may change the settings again (e.g.,
	'textwidth'), causing trouble when editing.  You might want to set
	'bin' again when the file has been loaded.
	The previous values of these options are remembered and restored when
	'bin' is switched from on to off.  Each buffer has its own set of
	saved option values.
	When writing a file the <EOL> for the last line is only written if
	there was one in the original file (normally Vim appends an <EOL> to
	the last line if there is none; this would make the file longer).  See
	the 'endofline' option.

			*'bioskey'* *'biosk'* *'nobioskey'* *'nobiosk'*
'bioskey' 'biosk'	boolean	(default on)
			global
			{not in Vi}  {only for MS-DOS}
	When on the bios is called to obtain a keyboard character.  This works
	better to detect CTRL-C, but only works for the console.  When using a
	terminal over a serial port reset this option.
	Also see |'conskey'|.

						*'breakat'* *'brk'*
'breakat' 'brk'		string	(default " ^I!@*-+_;:,./?")
			global
			{not in Vi}
			{not available when compiled without the  |+linebreak|
			feature}
	This option lets you choose which characters might cause a line
	break if 'linebreak' is on.

						*'browsedir'* *'bsdir'*
'browsedir' 'bsdir'	string	(default for "last")
			global
			{not in Vi} {only for Motif and Win32 GUI}
	Which directory to use for the file browser:
	   last		Use same directory as with last file browser.
	   buffer	Use the directory of the related buffer.
	   current	Use the current directory.

				   *'cindent'* *'cin'* *'nocindent'* *'nocin'*
'cindent' 'cin'		boolean	(default off)
			local to buffer
			{not in Vi}
			{not available when compiled without the |+cindent|
			feature}
	Enables automatic C program indenting  See 'cinkeys' to set the keys
	that trigger reindenting in insert mode and 'cinoptions' to set your
	preferred indent style.  If 'lisp' is not on and 'equalprg' is empty,
	the "=" operator indents using this algorithm rather than calling an
	external program.  See |C-indenting|.  This option is switched off
	when 'paste' is set.  When you don't like the way 'cindent' works, try
	the 'smartindent' option.
	NOTE: This option is reset when 'compatible' is set.

'cinkeys' 'cink'	string	(default "0{,0},:,0#,!^F,o,O,e")
			local to buffer
			{not in Vi}
			{not available when compiled without the |+cindent|
			feature}
	A list of keys that, when typed in Insert mode, cause reindenting of
	the current line.  Only happens if 'cindent' is on.  See
	|C-indenting|.

						*'cinoptions'* *'cino'*
'cinoptions' 'cino'	string	(default "")
			local to buffer
			{not in Vi}
			{not available when compiled without the |+cindent|
			feature}
	The 'cinoptions' affect the way 'cindent' reindents lines in a C
	program.  See |cinoptions-values| for the values of this option, and
	|C-indenting| for info on C indenting in general.


						*'cinwords'* *'cinw'*
'cinwords' 'cinw'	string	(default "if,else,while,do,for,switch")
			local to buffer
			{not in Vi}
			{not available when compiled without both the
			|+cindent| and the |+smartindent| features}
	These keywords start an extra indent in the next line when
	'smartindent' or 'cindent' is set.  For 'cindent' this is only done at
	an appropriate place (inside {}).
	Note that 'ignorecase' isn't used for 'cinwords'.  If case doesn't
	matter, include the keyword both the upper case and lower case:
	"if,If,IF".

						*'clipboard'* *'cb'*
'clipboard' 'cb'	string	(default "")
			global
			{not in Vi}
			{only in GUI versions or when the |+xterm_clipboard|
			feature is included}
	This option is a list of comma separated names.
	These names are recognized:

	unnamed		When included, Vim will use the clipboard register '*'
			for all yank, delete and put operations which would
			normally go to the unnamed register.  When a register
			is explictly specified, it will always be used
			regardless of whether "unnamed" is in 'clipboard' or
			not.  The clipboard register can always be explicitly
			accessed using the "* notation.  Also see
			|gui-clipboard|.

	autoselect	Works like the 'a' flag in 'guioptions': If present,
			then whenever Visual mode is started, or the Visual
			area extended, Vim tries to become the owner of the
			windowing system's global selection or put the
			selected text on the clipboard.  See |guioptions_a|
			for details.  When the GUI is active, the 'a' flag in
			'guioptions' is used, when the GUI is not active, this
			"autoselect" flag is used.

						*'cmdheight'* *'ch'*
'cmdheight' 'ch'	number	(default 1)
			global
			{not in Vi}
	Number of screen lines to use for the command-line.  Helps avoiding
	|hit-return| prompts.

						*'columns'* *'co'*
'columns' 'co'		number	(default 80 or terminal width)
			global
			{not in Vi}
	Number of columns of the screen.  Normally this is set by the terminal
	initialization and does not have to be set by hand.
	When Vim is running in the GUI or in a resizable window, setting this
	option may cause the window size to be changed.
	When you set this option and Vim is unable to change the physical
	number of columns of the display, the display may be messed up.

						*'comments'* *'com'*
'comments' 'com'	string	(default
				"s1:/*,mb:*,ex:*/,://,b:#,:%,:XCOMM,n:>,fb:-")
			local to buffer
			{not in Vi}
			{not available when compiled without the |+comments|
			feature}
	A comma separated list of strings that can start a comment line.  See
	|format-comments|.  See |option-backslash| about using backslashes to
	insert a space.

			*'compatible'* *'cp'* *'nocompatible'* *'nocp'*
'compatible' 'cp'	boolean	(default on, off when a .vimrc file is found)
			global
			{not in Vi}
	This option has the effect of making Vim either more Vi-compatible, or
	make Vim behave in a more useful way.
	This is a special kind of option, because when it's set or reset,
	other options are also changed as a side effect.  CAREFUL: Setting or
	resetting this option can have a lot of unexpected effects: Mappings
	are interpreted in another way, undo behaves differently, etc.  If you
	set this option in your vimrc file, you should probably put it at the
	very start.
	By default this option is on and the Vi defaults are used for the
	options.  This default was chosen for those people who want to use Vim
	just like Vi, and don't even (want to) know about the 'compatible'
	option.
	When a ".vimrc" file is found while Vim is starting up, this option is
	switched off, and all options that have not been modified will be set
	to the Vim defaults.  Effectively, this means that when a ".vimrc"
	file exists, Vim will use the Vim defaults, otherwise it will use the
	Vi defaults.  (Note: This doesn't happen for the system-wide vimrc
	file).  Also see |compatible-default|.
	You can also set this option with the "-C" argument, and reset it with
	"-N".  See |-C| and |-N|.
	Switching this option off makes the Vim defaults be used for options
	that have a different Vi and Vim default value.  See the options
	marked with a '+' below.  Other options are not modified.
	At the moment this option is set, several other options will be set
	or reset to make Vim as Vi-compatible as possible.  See the table
	below.  This can be used if you want to revert to Vi compatible
	editing.
	See also 'cpoptions'.

	option		+ set value	effect	~

	'allowrevins'	  off		no CTRL-_ command
	'backspace'	  ""		normal backspace
	'backup'	  off		no backup file
	'cindent'	  off		no C code indentation
	'cpoptions'	+ (all flags)	Vi-compatible flags
	'cscopetag'	  off		don't use cscope for ":tag"
	'cscopetagorder'  0		see |cscopetagorder|
	'cscopeverbose'	  off		see |cscopeverbose|
	'digraph'	  off		no digraphs
	'esckeys'	+ off		no <Esc>-keys in Insert mode
	'expandtab'	  off		tabs not expanded to spaces
	'fileformats'	+ ""		no automatic file format detection,
			  "dos,unix"	except for DOS, Windows and OS/2
	'formatoptions'	+ "vt"		Vi compatible formatting
	'gdefault'	  off		no default 'g' flag for ":s"
	'history'	+ 0		no commandline history
	'hkmap'		  off		no Hebrew keyboard mapping
	'hkmapp'	  off		no phonetic Hebrew keyboard mapping
	'hlsearch'	  off		no highlighting of search matches
	'incsearch'	  off		no incremental searching
	'insertmode'	  off		do not start in Insert mode
	'iskeyword'	+ "@,48-57,_"	keywords contain alphanumeric
						characters and '_'
	'joinspaces'	  on		insert 2 spaces after period
	'modeline'	+ off		no modelines
	'more'		+ off		no pauses in listings
	'revins'	  off		no reverse insert
	'ruler'		  off		no ruler
	'scrolljump'	  1		no jump scroll
	'scrolloff'	  0		no scroll offset
	'shiftround'	  off		indent not rounded to shiftwidth
	'shortmess'	+ ""		no shortening of messages
	'showcmd'	+ off		command characters not shown
	'showmode'	+ off		current mode not shown
	'smartcase'	  off		no automatic ignore case switch
	'smartindent'	  off		no smart indentation
	'smarttab'	  off		no smart tab size
	'softtabstop'	  0		tabs are always 'tabstop' positions
	'startofline'	  on		goto startofline with some commands
	'tagrelative'	+ off		tag file names are not relative
	'textauto'	+ off		no automatic textmode detection
	'textwidth'	  0		no automatic line wrap
	'tildeop'	  off		tilde is not an operator
	'ttimeout'	  off		no terminal timeout
	'whichwrap'	+ ""		left-right movements don't wrap
	'wildchar'	+ CTRL-E	only when the current value is <Tab>
					use CTRL-E for cmdline completion
	'writebackup'	  on or off	depends on +writebackup feature

						*'complete'* *'cpt'*
'complete' 'cpt'	string	(default: ".,w,b,u,t,i")
			local to buffer
			{not in Vi}
	This option specifies how keyword completion |ins-completion| works
	when CTRL-P or CTRL-N are used.  It indicates the type of completion
	and the places to scan.  It is a comma separated list of flags:
	.	scan the current buffer ('wrapscan' is ignored)
	w	scan buffers from other windows
	b	scan other loaded buffers
	u	scan the unloaded buffers
	k	scan the files given with the 'dictionary' option
	k[dict]	scan the file [dict].  Several "k" flags can be given,
		patterns are valid too.  For example:
>			:set cpt=k/usr/dict/*,k~/spanish
	i	scan current and included files
	d	scan current and included files for defined name or macro
		|i_CTRL-X_CTRL-D|
	]	tag completion
	t	same as "]"

	Unloaded buffers are not loaded, thus their autocmds |:autocmd| are
	not executed, this may lead to unexpected completions from some files
	(gzipped files for example)

	The default is ".,w,b,u,t,i", which means to scan:
	   1. the current buffer
	   2. buffers in other windows
	   3. other loaded buffers
	   4. unloaded buffers
	   5. tags
	   6. included files

	As you can see, CTRL-N and CTRL-P can be used to do any 'iskeyword'-
	based expansion (eg dictionary |i_CTRL-X_CTRL-K|, included patterns
	|i_CTRL-X_CTRL-I|, tags |i_CTRL-X_CTRL-]| and normal expansions)

				*'confirm'* *'cf'* *'noconfirm'* *'nocf'*
'confirm' 'cf'		boolean (default off)
			global
			{not in Vi}
	When 'confirm' is on, certain operations that would normally
	fail because of unsaved changes to a buffer, e.g. ":q" and ":e",
	instead raise a |dialog| asking if you wish to save the current
	file(s).  You can still use a ! to unconditionally |abandon| a buffer.
	If 'confirm' is off you can still activate confirmation for one
	command only (this is most useful in mappings) with the |:confirm|
	command.
	Also see the |confirm()| function and the 'v' flag in 'guioptions'.

			*'conskey'* *'consk'* *'noconskey'* *'noconsk'*
'conskey' 'consk'	boolean	(default off)
			global
			{not in Vi}  {only for MS-DOS}
	When on direct console I/O is used to obtain a keyboard character.
	This should work in most cases.  Also see |'bioskey'|.  Together,
	three methods of console input are available:
	'conskey'   'bioskey'	    action ~
	   on	     on or off	    direct console input
	   off		on	    BIOS
	   off		off	    STDIN

						*'cpoptions'* *'cpo'*
'cpoptions' 'cpo'	string	(Vim default: "aABceFs",
				 Vi default:  all flags)
			global
			{not in Vi}
	A sequence of single character flags.  When a character is present
	this indicates vi-compatible behavior.  This is used for things where
	not being vi-compatible is mostly or sometimes preferred.
	'cpoptions' stands for "compatible-options".
	Commas can be added for readability.
	To avoid problems with flags that are added in the future, use the
	"+=" and "-=" feature of ":set" |add-option-flags|.
	NOTE: This option is set to the Vi default value when 'compatible' is
	set and to the Vim default value when 'compatible' is reset.

	    contains	behaviour	~
		a	When included, a ":read" command with a file name
			argument will set the alternate file name for the
			current window.
		A	When included, a ":write" command with a file name
			argument will set the alternate file name for the
			current window.
		b	"\|" in a ":map" command is recognized as the end of
			the map command.  The '\' is included in the mapping,
			the text after the '|' is interpreted as the next
			command.  Use a CTRL-V instead of a backslash to
			include the '|' in the mapping.  Applies to all
			mapping, abbreviation, menu and autocmd commands.
			See also |map_bar|.
		B	A backslash has no special meaning in mappings,
			abbreviations and the "to" part of the menu commands.
			Remove this flag to be able to use a backslash like a
			CTRL-V.  For example, the command ":map X \<Esc>"
			results in X being mapped to:
				'B' included:	"\^["    (^[ is a real <Esc>)
				'B' excluded:   "<Esc>"  (5 characters)
				('<' excluded in both cases)
		C	Do not concatenate sourced lines that start with a
			backslash.  See |line-continuation|.
		<	Disable the recognition of special key codes in |<>|
			form in mappings, abbreviations, and the "to" part of
			menu commands.  For example, the command
			":map X <Tab>" results in X being mapped to:
				'<' included:   "<Tab>"  (5 characters)
				'<' excluded:   "^I"     (^I is a real <Tab>)
			Also see the 'k' flag below.
		c	Searching continues at the end of any match at the
			cursor position.  When not present searching continues
			one character from the cursor position.  With 'c'
			"abababababab" only gets three matches when repeating
			"/abab", without 'c' there are five matches.
		d	Using "./" in the 'tags' option doesn't mean to use
			the tags file relative to the current file, but the
			tags file in the current directory.
		e	When executing a register with ":@r", always add a
			<CR> to the last line, also when the register is not
			linewise.  If this flag is not present, the register
			is not linewise and the last line does not end in a
			<CR>, then the last line is put on the command-line
			and can be edited before hitting <CR>.
		E	It is an error when using "y", "d", "c", "g~", "gu" or
			"gU" on an Empty region.  The operators only work when
			at least one character is to be operate on.  Example:
			This makes "y0" fail in the first column.
		f	When included, a ":read" command with a file name
			argument will set the file name for the current buffer,
			if the current buffer doesn't have a file name yet.
		F	When included, a ":write" command with a file name
			argument will set the file name for the current
			buffer, if the current buffer doesn't have a file name
			yet.
		j	When joining lines, only add two spaces after a '.',
			not after '!' or '?'.  Also see 'joinspaces'.
		J	A |sentence| has to be followed by two spaces after
			the '.', '!' or '?'. A <Tab> is not recognized as
			white space.
		k	Disable the recognition of raw key codes in
			mappings, abbreviations, and the "to" part of menu
			commands.  For example, if <Key> sends ^[OA (where ^[
			is <Esc>), the command ":map X ^[OA" results in X
			being mapped to:
				'k' included:   "^[OA"   (3 characters)
				'k' excluded:   "<Key>"  (one key code)
			Also see the '<' flag above.
		K	Don't wait for a key code to complete when it is
			halfway a mapping.  This breaks mapping <F1><F1> when
			only part of the second <F1> has been read.  It
			enables cancelling the mapping by typing <F1><Esc>.
		l	Backslash in a [] range in a search pattern is taken
			literally, only "\]" is special  See |/[]|
			   'l' included: "/[ \t]"  finds <Space>, '\' and 't'
			   'l' excluded: "/[ \t]"  finds <Space> and <Tab>
		L	When the 'list' option is set, 'wrapmargin',
			'textwidth' and Virtual replace mode (see |gR|) count
			a <Tab> as two characters, instead of the normal
			behavior of a <Tab>.
		m	When included, a showmatch will always wait half a
			second.  When not included, a showmatch will wait half
			a second or until a character is typed.  |'showmatch'|
		o	Line offset to search command is not remembered for
			next search.
		O	Don't complain if a file is being overwritten, even
			when it didn't exist when editing it.  This is a
			protection agains a file unexpectedly created by
			someone else.  Vi didn't complain about this.
		p	Vi compatible Lisp indenting.  When not present, a
			slightly better algorithm is used.
		r	Redo ("." command) uses "/" to repeat a search
			command, instead of the actually used search string.
		s	Set buffer options when entering the buffer for the
			first time.  This is like it is in Vim version 3.0.
			And it is the default.  If not present the options are
			set when the buffer is created.
		S	Set buffer options always when entering a buffer
			(except 'readonly', 'fileformat', 'filetype' and
			'syntax').  This is the (most) Vi compatible setting.
			The options are set to the values in the current
			buffer.  When you change an option and go to another
			buffer, the value is copied.  Effectively makes the
			buffer options global to all buffers.

			's'    'S'     copy buffer options
			no     no      when buffer created
			yes    no      when buffer first entered (default)
			 X     yes     each time when buffer entered (vi comp.)

		t	Search pattern for the tag command is remembered for
			"n" command.  Otherwise Vim only puts the pattern in
			the history for search pattern, but doesn't change the
			last used search pattern.
		u	Undo is Vi compatible.  See |undo-two-ways|.
		w	When using "cw" on a blank character, only change one
			character and not all blanks until the start of the
			next word.
		W	Don't overwrite a readonly file.  When omitted, ":w!"
			overwrites a readonly file, if possible.
		x	<Esc> on the command-line executes the command-line.
			The default in Vim is to abandon the command-line,
			because <Esc> normally aborts a command.  |c_<Esc>|
		y	A yank command can be redone with ".".
		$	When making a change to one line, don't redisplay the
			line, but put a '$' at the end of the changed text.
			The changed text will be overwritten when you type the
			new text.  The line is redisplayed if you type any
			command that moves the cursor from the insertion
			point.
		!	When redoing a filter command, use the last used
			external command, whatever it was.  Otherwise the last
			used -filter- command is used.
		*	Use ":*" in the same way as ":@".  When not included,
			":*" is an alias for ":'<,'>", select the Visual area.
		%	Vi-compatible matching is done for the "%" command.
			Does not recognize "#if", "#endif", etc.
			Does not recognize "/*" and "*/".
			Parens inside single and double quotes are also
			counted, causing a string that contains a paren to
			disturb the matching.  For example, in a line like
			"if (strcmp("foo(", s))" the first paren does not
			match the last one.  When this flag is not included,
			parens inside single and double quotes are treated
			specially.  When matching a paren outside of quotes,
			everything inside quotes is ignored.  When matching a
			paren inside quotes, it will find the matching one (if
			there is one).  This works very well for C programs.

						*'cscopeprg'* *'csprg'*
'cscopeprg' 'csprg'	string	(default "cscope")
			global
			{not available when compiled without the |+cscope|
			feature}
			{not in Vi}
	Specifies the command to execute cscope.  See |cscopeprg|.
	When this option is set from a |modeline|, while the 'secure' option
	is set, you will get a warning message.

				*'cscopetag'* *'cst'* *'nocscopetag'* *'nocst'*
'cscopetag' 'cst'	boolean (default off)
			global
			{not available when compiled without the |+cscope|
			feature}
			{not in Vi}
	Use cscope for tag commands.  See |cscope-options|.
	NOTE: This option is reset when 'compatible' is set.

						*'cscopetagorder'* *'csto'*
'cscopetagorder' 'csto'	number	(default 0)
			global
			{not available when compiled without the |+cscope|
			feature}
			{not in Vi}
	Determines the order in which ":cstag" performs a search.  See
	|cscopetagorder|.
	NOTE: This option is set to 0 when 'compatible' is set.

					*'cscopeverbose'* *'csverb'*
					*'nocscopeverbose'* *'nocsverb'*
'cscopeverbose' 'csverb' boolean (default off)
			global
			{not available when compiled without the |+cscope|
			feature}
			{not in Vi}
	Give messages when adding a cscope database.  See |cscopeverbose|.
	NOTE: This option is reset when 'compatible' is set.

						*'define'* *'def'*
'define' 'def'		string	(default "^#\s*define")
			global
			{not in Vi}
	Pattern to be used to find a macro definition.  It is a search
	pattern, just like for the "/" command.  This option is used for the
	commands like "[i" and "[d" |include-search|.  The 'isident' option is
	used to recognize the identifier name after the match.  See
	|option-backslash| about inserting backslashes to include a space or
	backslash.
	The default value is for C programs.  For C++ this value would be
	useful, to include const type declarations:
>		^\(#\s*define\|[a-z]*\s*const\s*[a-z]*\)
	When using the ":set" command, you need to double the backslashes!

						*'dictionary'* *'dict'*
'dictionary' 'dict'	string	(default "")
			global
			{not in Vi}
	List of file names, separated by commas, that are used to lookup words
	for keyword completion commands |i_CTRL-X_CTRL-K|.  Each file should
	contain a list of words.  This can be one word per line, or several
	words per line, separated by non-keyword characters (white space is
	preferred).
	To include a comma in a file name precede it with a backslash.  Spaces
	after a comma are ignored, otherwise spaces are included in the file
	name.  See |option-backslash| about using backslashes.
	Where to find a list of words?
	- On FreeBSD, there is the file "/usr/share/dict/words".
	- In the Simtel archive, look in the "msdos/linguist" directory.
	- In "miscfiles" of the GNU collection.
	The use of |:set+=| and |:set-=| is preferred when adding or removing
	directories from the list.  This avoids problems when a future version
	uses another default.

				     *'digraph'* *'dg'* *'nodigraph'* *'nodg'*
'digraph' 'dg'		boolean	(default off)
			global
			{not in Vi}
			{not available when compiled without the |+digraphs|
			feature}
	Enable the entering of digraphs in Insert mode with {char1} <BS>
	{char2}.  See |digraphs|.
	NOTE: This option is reset when 'compatible' is set.

						*'directory'* *'dir'*
'directory' 'dir'	string	(default for Amiga: ".,t:",
				 for MS-DOS and Win32: ".,c:\tmp,c:\temp"
				 for Unix: ".,~/tmp,/var/tmp,/tmp")
			global
	List of directory names for the swap file, separated with commas.
	- The swap file will be created in the first directory where this is
	  possible.
	- Empty means that no swap file will be used (recovery is
	  impossible!).
	- A directory "." means to put the swap file in the same directory as
	  the edited file.  On Unix, a dot is prepended to the file name, so
	  it doesn't show in a directory listing.
	- A directory starting with "./" (or ".\" for MS-DOS et.al.) means to
	  put the swap file relative to where the edited file is.  The leading
	  "." is replaced with the path name of the edited file.
	- For Unix and Win32, if a directory ends in two path separators, the
	  swap file name will be built from the complete path to the file
	  with all path separators substituted to percent '%' signs. This will
	  ensure file name uniqueness in the preserve directory.
	- Spaces after the comma are ignored, other spaces are considered part
	  of the directory name.  To have a space at the start of a directory
	  name, precede it with a backslash.
	- To include a comma in a directory name precede it with a backslash.
	- A directory name may end in an ':' or '/'.
	- Environment variables are expanded |:set_env|.
	- Careful with '\' characters, type one before a space, type two to
	  get one in the option (see |option-backslash|), for example:
>	    :set dir=c:\\tmp,\ dir\\,with\\,commas,\\\ dir\ with\ spaces
	- For backwards compatibility with Vim version 3.0 a '>' at the start
	  of the option is removed.
	Using "." first in the list is recommended.  This means that editing
	the same file twice will result in a warning.  Using "/tmp" on Unix is
	discouraged: When the system crashes you lose the swap file.
	"/var/tmp" is often not cleared when rebooting, thus is a better
	choice than "/tmp".  But it can contain a lot of files, your swap
	files get lost in the crowd.  That is why a "tmp" directory in your
	home directory is tried first.
	The use of |:set+=| and |:set-=| is preferred when adding or removing
	directories from the list.  This avoids problems when a future version
	uses another default.
	{Vi: directory to put temp file in, defaults to "/tmp"}

					*'display'* *'dy'*
'display' 'dy'		string	(default "")
			global
			{not in Vi}
	Change the way text is displayed.  This is comma separated list of
	flags.  Currently only one is supported:
	lastline	When included, as much as possible of the last line
			in a window will be displayed.  When not included, a
			last line that doesn't fit is replaced with "@" lines.

			   *'ed'* *'edcompatible'* *'noed'* *'noedcompatible'*
'edcompatible' 'ed'	boolean	(default off)
			global
	Makes the 'g' and 'c' flags of the ":substitute" command to be
	toggled each time the flag is given.  See |complex-change|.  See
	also 'gdefault' option.
	Switching this option on is discouraged!

			*'endofline'* *'eol'* *'noendofline'* *'noeol'*
'endofline' 'eol'	boolean	(default on)
			local to buffer
			{not in Vi}
	When writing a file and this option is off and the 'binary' option
	is on, no <EOL> will be written for the last line in the file.  This
	option is automatically set when starting to edit a new file, unless
	the file does not have an <EOL> for the last line in the file, in
	which case it is reset.  Normally you don't have to set or reset this
	option.  When 'binary' is off the value is not used when writing the
	file.  When 'binary' is on it is used to remember the presence of a
	<EOL> for the last line in the file, so that when you write the file
	the situation from the original file can be kept.  But you can change
	it if you want to.

			     *'equalalways'* *'ea'* *'noequalalways'* *'noea'*
'equalalways' 'ea'	boolean	(default on)
			global
			{not in Vi}
	When on, all the windows are automatically made the same size after
	splitting or closing a window.  When off, splitting a window will
	reduce the size of the current window and leave the other windows the
	same.  When closing a window the extra lines are given to the window
	above it.

						*'equalprg'* *'ep'*
'equalprg' 'ep'		string	(default "")
			global
			{not in Vi}
	External program to use for "=" command.  When this option is empty
	the internal formatting functions are used ('lisp' or 'cindent').
	Environment variables are expanded |:set_env|.  See |option-backslash|
	about including spaces and backslashes.
	When this option is set from a |modeline|, while the 'secure' option
	is set, you will get a warning message.

			*'errorbells'* *'eb'* *'noerrorbells'* *'noeb'*
'errorbells' 'eb'	boolean	(default off)
			global
	Ring the bell (beep or screen flash) for error messages.  This only
	makes a difference for error messages, the bell will be used always
	for a lot of errors without a message (e.g., hitting <Esc> in Normal
	mode).  See 'visualbell' on how to make the bell behave like a beep,
	screen flash or do nothing.

						*'errorfile'* *'ef'*
'errorfile' 'ef'	string	(Amiga default: "AztecC.Err",
					others: "errors.err")
			global
			{not in Vi}
			{not available when compiled without the |+quickfix|
			feature}
	Name of the errorfile for the QuickFix mode (see |:cf|).
	When the "-q" command-line argument is used, 'errorfile' is set to the
	following argument.  See |-q|.
	NOT used for the ":make" command.  See 'makeef' for that.
	Environment variables are expanded |:set_env|.
	See |option-backslash| about including spaces and backslashes.

						*'errorformat'* *'efm'*
'errorformat' 'efm'	string	(default is very long)
			global
			{not in Vi}
			{not available when compiled without the |+quickfix|
			feature}
	Scanf-like description of the format for the lines in the error file
	(see |errorformat|).

				     *'esckeys'* *'ek'* *'noesckeys'* *'noek'*
'esckeys' 'ek'		boolean	(Vim default: on, Vi default: off)
			global
			{not in Vi}
	Function keys that start with an <Esc> are recognized in Insert
	mode.  When this option is off, the cursor and function keys cannot be
	used in Insert mode if they start with an <Esc>.  The advantage of
	this is that the single <Esc> is recognized immediately, instead of
	after one second.  Instead of resetting this option, you might want to
	try changing the values for 'timeoutlen' and 'ttimeoutlen'.  Note that
	when 'esckeys' is off, you can still map anything, but the cursor keys
	won't work by default.
	NOTE: This option is set to the Vi default value when 'compatible' is
	set and to the Vim default value when 'compatible' is reset.

						*'eventignore'* *'ei'*
'eventignore' 'ei'	string	(default "")
			global
			{not in Vi}
	A list of autocommand event names, which are to be ignored.
	When set to "all", all autocommand events are ignored, autocommands
	will not be executed.
	Otherwise this is a comma separated list of event names.  Example:
>	    :set ei=WinEnter,WinLeave

				 *'expandtab'* *'et'* *'noexpandtab'* *'noet'*
'expandtab' 'et'	boolean	(default off)
			local to buffer
			{not in Vi}
	In Insert mode: Use the appropriate number of spaces to insert a
	<Tab>.  Spaces are used in indents with the '>' and '<' commands and
	when 'autoindent' is on.  To insert a real tab when 'expandtab' is
	on, use CTRL-V<Tab>.  See also |:retab| and |ins-expandtab|.
	NOTE: This option is reset when 'compatible' is set.

					*'exrc'* *'ex'* *'noexrc'* *'noex'*
'exrc' 'ex'		boolean (default off)
			global
			{not in Vi}
	Enables the reading of .vimrc, .exrc and .gvimrc in the current
	directory.  If you switch this option on you should also consider
	setting the 'secure' option (see |initialization|).  Using a local
	.exrc, .vimrc or .gvimrc is a potential security leak, use with care!
	also see |.vimrc| and |gui-init|.
	This option cannot be set from a |modeline|.

					*'fileencoding'* *'fe'*
'fileencoding' 'fe'	string (default: "ansi")
			local to buffer
			{only available when compiled with the |+multi_byte|
			feature}
			{not in Vi}
	Enables editing of alternative encoded files, for example shift-JIS or
	Unicode.  When you set this option, it fires of a 'FileEncoding'
	autocommand so you can set up fonts if necessary.

	See |multibyte|.

	Possible values are:
	    ansi	default setting, good for most Western languages
	    unicode	(to be implemented>
	    japan	set to use shift-JIS (Windows CP 932) encoding
	    korea	set to use Korean DBCS
	    prc		use simplified Chinese encoding
	    taiwan	use traditional Chinese encoding
	    hebrew	(to be implemented)
	    farsi	(to be implemented)

	This lets you view, for example, a Japanese S-JIS encoded file
	(provided you have a suitable font).  The DBCS characters are treated
	as a unit, i.e. you cursor past them or delete them, etc as a unit,
	rather than deleting half a character.

					*'fileformat'* *'ff'*
'fileformat' 'ff'	string (DOS, Win32, OS/2 default: "dos",
				Unix default: "unix",
				Macintosh default: "mac")
			local to buffer
			{not in Vi}
	This gives the <EOL> of the current buffer, which is used for
	reading/writing the buffer from/to a file:
	    dos	    <CR> <NL>
	    unix    <NL>
	    mac	    <CR>
	When "dos" is used, CTRL-Z at the end of a file is ignored.
	See |file-formats| and |file-read|.
	When 'binary' is set, the value of 'fileformat' is ignored, file I/O
	works like it was set to "unix'.
	This option is set automatically when starting to edit a file and
	'fileformats' is not empty and 'binary' is off.
	When this option is set, after starting to edit a file, the 'modified'
	option is set, because the file would be different when written.
	For backwards compatibility: When this option is set to "dos",
	'textmode' is set, otherwise 'textmode' is reset.

					*'fileformats'* *'ffs'*
'fileformats' 'ffs'	string (Vim+Vi	DOS, Win32, OS/2 default: "dos,unix",
				Vim	Unix default: "unix,dos",
				Vim	Mac default: "mac,unix,dos",
				Vi	others default: "")
			global
			{not in Vi}
	This gives the end-of-line (<EOL>) formats that will be tried.  It is
	used when starting to edit a new buffer and when reading a file into
	an existing buffer:
	- When empty, the format defined with 'fileformat' will be used
	  always.  It is not set automatically.
	- When set to one name, that format will be used whenever a new buffer
	  is opened.  'fileformat' is set accordingly for that buffer.  The
	  'fileformats' name will be used when a file is read into an existing
	  buffer, no matter what 'fileformat' for that buffer is set to.
	- When more than one name is present, separated by commas, automatic
	  <EOL> detection will be done when reading a file.  When starting to
	  edit a file, a check is done for the <EOL>:
	  1. If all lines end in <CR><NL>, and 'fileformats' includes "dos",
	     'fileformat' is set to "dos".
	  2. If a <NL> is found and 'fileformats' includes "unix, 'fileformat'
	     is set to "unix".  Note that when a <NL> is found without a
	     preceding <CR>, "unix" is preferred over "dos".
	  3. If 'fileformats' includes "mac", 'fileformat' is set to "mac".
	     This means that "mac" is only chosen when "unix" is not present,
	     or when no <NL> is found in the file, and when "dos" is not
	     present, or no <CR><NL> is present in the file.
	     Also if "unix" was first chosen, but the first <CR> is before
	     the first <NL> and there appears to be more <CR>'s than <NL>'s in
	     the file, then 'fileformat' is set to "mac".
	  4. If 'fileformat' is still not set, the first name from
	     'fileformats' is used.
	  When reading a file into an existing buffer, the same is done, but
	  this happens like 'fileformat' has been set appropriately for that
	  file only, the option is not changed.
	When 'binary' is set, the value of 'fileformats' is not used.

	For systems with a Dos-like <EOL> (<CR><NL>), when reading files that
	are ":source"ed and for vimrc files, automatic <EOL> detection may be
	done:
	- When 'fileformats' is empty, there is no automatic detection.  Dos
	  format will be used.
	- When 'fileformats' is set to one or more names, automatic detection
	  is done.  This is based on the first <NL> in the file: If there is a
	  <CR> in front of it, Dos format is used, otherwise Unix format is
	  used.
	Also see |file-formats|.
	For backwards compatibility: When this option is set to an empty
	string or one format (no comma is included), 'textauto' is reset,
	otherwise 'textauto' is set.
	NOTE: This option is set to the Vi default value when 'compatible' is
	set and to the Vim default value when 'compatible' is reset.

					*'filetype'* *'ft'*
'filetype' 'ft'		string (default: "")
			local to buffer
			{not in Vi}
			{not available when compiled without the |+autocmd|
			feature}
	When this option is set, the FileType autocommand event is triggered.
	All autocommands that match with the value of this option will be
	executed.  Thus the value of 'filetype' is used in place of the file
	name.
	Otherwise this option does not always reflect the current file type.
	This option is normally set when the file type is detected.  To enable
	this use the ":filetype on" command. |:filetype|
	Setting this option to a different value is most useful in a modeline,
	for a file for which the file type is not automatically recognized.
	Example, for in an IDL file:
>		/* vim: set filetype=idl : */
	|FileType| |autocmd-filetypes|
	Do not confuse this option with 'osfiletype', which is for the file
	type that is actually stored with the file.
	This option is not copied to another buffer, independent of the 's' or
	'S' flag in 'cpoptions'.

					*'fkmap'* *'fk'* *'nofkmap'* *'nofk'*
'fkmap' 'fk'		boolean (default off)
			global
			{not in Vi}
			{only available when compiled with the |+rightleft|
			feature}
	When on, the keyboard is mapped for the Farsi character set.
	Normally you would set 'allowrevins' and use CTRL-_ in insert mode to
	toggle this option |i_CTRL-_|.  See |farsi.txt|.

					*'formatoptions'* *'fo'*
'formatoptions' 'fo'	string (Vim default: "tcq", Vi default: "vt")
			local to buffer
			{not in Vi}
	This is a sequence of letters which describes how automatic
	formatting is to be done.  See |fo-table|.  When the 'paste' option is
	on, no formatting is done (like 'formatoptions' is empty).  Commas can
	be inserted for readability.
	To avoid problems with flags that are added in the future, use the
	"+=" and "-=" feature of ":set" |add-option-flags|.
	NOTE: This option is set to the Vi default value when 'compatible' is
	set and to the Vim default value when 'compatible' is reset.

						*'formatprg'* *'fp'*
'formatprg' 'fp'	string (default "")
			global
			{not in Vi}
	The name of an external program that will be used to format the lines
	selected with the "gq" command.  The program must take the input on
	stdin and produce the output on stdout.  The Unix program "fmt" is
	such a program.  If this option is an empty string, the internal
	format function will be used |C-indenting|.  Environment variables are
	expanded |:set_env|.  See |option-backslash| about including spaces
	and backslashes.
	When this option is set from a |modeline|, while the 'secure' option
	is set, you will get a warning message.

				   *'gdefault'* *'gd'* *'nogdefault'* *'nogd'*
'gdefault' 'gd'		boolean	(default off)
			global
			{not in Vi}
	When on, the ":substitute" flag 'g' is default on.  This means that
	all matches in a line are substituted instead of one.  When a 'g' flag
	is given to a ":substitute" command, this will toggle the substitution
	of all or one match.  See |complex-change|.

		command		'gdefault' on	'gdefault' off	~
		:s///		  subst. all	  subst. one
		:s///g		  subst. one	  subst. all
		:s///gg		  subst. all	  subst. one

	NOTE: This option is reset when 'compatible' is set.

						*'grepformat'* *'gfm'*
'grepformat' 'gfm'	string	(default "%f:%l%m,%f  %l%m")
			global
			{not in Vi}
	Format to recognize for the ":grep" command output.
	This is a scanf-like string that uses the same format as the
	'errorformat' option: see |errorformat|.

						*'grepprg'* *'gp'*
'grepprg' 'gp'		string	(default "grep -n", Win32: "findstr /n")
			global
			{not in Vi}
	Program to use for the ":grep" command. This option may contain '%'
	and '#' characters, which are expanded like when used in a command-
	line.  The placeholder "$*" is allowed to specify where the arguments
	will be included.  Environment variables are expanded |:set_env|.  See
	|option-backslash| about including spaces and backslashes.

	See also the section |:make_makeprg|, since most of the comments there
	apply equally to 'grepprg'.
	When this option is set from a |modeline|, while the 'secure' option
	is set, you will get a warning message.

						*'guicursor'* *'gcr'*
'guicursor' 'gcr'	string	(default "n-v-c:block-Cursor,ve:ver35-Cursor,
					o:hor50-Cursor,i-ci:ver25-Cursor,
					r-cr:hor20-Cursor,sm:block-Cursor
					-blinkwait175-blinkoff150-blinkon175")
			global
			{not in Vi}
			{only available when compiled with GUI enabled, and
			for MSDOS and Win32 console}
	This option tells Vim what the cursor should look like in different
	modes.  The option is a comma separated list of parts.  Each part
	consist of a mode-list and an argument-list:
		mode-list:argument-list,mode-list:argument-list,..
	The mode-list is a dash separated list of these modes:
		n	Normal mode
		v	Visual mode
		ve	Visual mode with 'selection' "exclusive" (same as 'v',
			if not specified)
		o	Operator-pending mode
		i	Insert mode
		r	Replace mode
		c	Command-line Normal (append) mode
		ci	Command-line Insert mode
		cr	Command-line Replace mode
		sm	showmatch in Insert mode
		a	all modes
	The argument-list is a dash separated list of these arguments:
		hor{N}	horizontal bar, {N} percent of the character height
		ver{N}	vertical bar, {N} percent of the character width
		block	block cursor, fills the whole character
			[only one of the above three should be present]
		blinkwait{N}				*cursor-blinking*
		blinkon{N}
		blinkoff{N}
			blink times for cursor: blinkwait is the delay before
			the cursor starts blinking, blinkon is the time that
			the cursor is shown and blinkoff is the time that the
			cursor is not shown.  The times are in msec.  When one
			of the numbers is zero, there is no blinking.  The
			default is: "blinkwait700-blinkon400-blinkoff250".
			These numbers are used for a missing entry.  This
			means that blinking is enabled by default.  To switch
			blinking off you can use "blinkon0".  The cursor only
			blinks when Vim is waiting for input, not while
			executing a command.
			To make the cursor blink in an xterm, see
			|xterm-blink|.
		{group-name}
			a highlight group name, that sets the color and font
			for the cursor
	Examples of parts:
	   n-c-v:block-nCursor	in Normal, Command-line and Visual mode, use a
				block cursor with colors from the "nCursor"
				highlight group
	   i-ci:ver30-iCursor-blinkwait300-blinkon200-blinkoff150
				In Insert and Command-line Insert mode, use a
				30% vertical bar cursor with colors from the
				"iCursor" highlight group.  Blink a bit
				faster.

	The 'a' mode is different.  It will set the given argument-list for
	all modes.  It does not reset anything to defaults.  This can be used
	to do a common setting for all modes.  For example, to switch off
	blinking: "a:blinkon0"

	Examples of cursor highlighting:
>	    :highlight Cursor gui=reverse guifg=NONE guibg=NONE
>	    :highlight Cursor gui=NONE guifg=bg guibg=fg

	In an MSDOS or Win32 console, only the height of the cursor can be
	changed.  This can be done by specifying a block cursor, or a
	percentage for a vertical or horizontal cursor.

						*'guifont'* *'gfn'*
'guifont' 'gfn'		string	(default "")
			global
			{not in Vi}
			{only available when compiled with GUI enabled}
	This is a list of fonts which will be used for the GUI version of Vim.
	In its simplest form the value is just one font name.  When
	the font cannot be found you will get an error message.  To try other
	font names a list can be specified, font names separated with commas.
	The first valid font is used.
	Spaces after a comma are ignored.  To include a comma in a font name
	precede it with a backslash.  Setting an option requires an extra
	backslash before a space and a backslash.  See also
	|option-backslash|.  For example:
>	    :set guifont=Screen15,\ 7x13,font\\,with\\,commas
	will make vim try to use the font "Screen15" first, and if it fails it
	will try to use "7x13" and then "font,with,commas" instead.
	Note that the fonts must be mono-spaced (all characters have the same
	width).
	To preview a font on X11, you might be able to use the "xfontsel"
	program.  The "xlsfonts" program gives a list of all available fonts.
	For Win32 and GTK only:
>	    :set guifont=*
	will bring up a font requester, where you can pick the font you want.
	If none of the fonts can be loaded, vim will keep the current setting.
	If an empty font list is given, vim will try using other resource
	settings (for X, it will use the Vim.font resource), and finally it
	will try some builtin default which should always be there ("7x13" in
	the case of X).  The font names given should be "normal" fonts.  Vim
	will try to find the related bold and italic fonts.
	For the Win32 GUI
	- takes these options in the font name:
		hXX - height is XX (points)
		wXX - width is XX (points)
		b   - bold
		i   - italic
		u   - underline
		s   - strikeout
	  Use a ':' to separate the options.
	- A '_' can be used in the place of a space, so you don't need to use
	  backslashes to escape the spaces.
	- Example:
>	    :set guifont=courier_new:h12:w5:b
	Have a look at <http://nova.bsuvc.bsu.edu/prn/monofont/> for
	mono-spaced fonts and comments on them.
	See also |font-sizes|.

						*'guiheadroom'* *'ghr'*
'guiheadroom' 'ghr'	number	(default 50)
			global
			{not in Vi} {only for GTK and X11 GUI}
	The number of pixels subtracted from the screen height when fitting
	the GUI window on the screen.  Set this before the GUI is started,
	e.g., in your |gvimrc| file.  When zero, the whole screen height will
	be used by the window.  When positive, the specified number of pixel
	lines will be left for window decorations and other items on the
	screen.  Set it to a negative value to allow windows taller than the
	screen.

						*'guifontset'* *'gfs'*
'guifontset' 'gfs'	string	(default "")
			global
			{not in Vi}
			{only available when compiled with GUI enabled and
			with the |+xfontset| feature}
	When not empty, specifies two fonts to be used.  The first one for
	normal english, the second one for your special language.  See
	|xfontset|.

						*'guioptions'* *'go'*
'guioptions' 'go'	string	(default "agimrtT" (Win32 and GTK),
					 "agimrt" (Unix) or "gmrt")
			global
			{not in Vi}
			{only available when compiled with GUI enabled}
	This option only has an effect in the GUI version of vim.  It is a
	sequence of letters which describes what components and options of the
	GUI should be used.
	To avoid problems with flags that are added in the future, use the
	"+=" and "-=" feature of ":set" |add-option-flags|.

	Valid letters are as follows:
							*guioptions_a*
	  'a'	Autoselect:  If present, then whenever VISUAL mode is started,
		or the Visual area extended, Vim tries to become the owner of
		the windowing system's global selection.  This means that the
		Visually highlighted text is available for pasting into other
		applications as well as into Vim itself.  When the Visual mode
		ends, possibly due to an operation on the text, or when an
		application wants to paste the selection, the highlighted text
		is automatically yanked into the "* selection register.
		Thus the selection is still available for pasting into other
		applications after the VISUAL mode has ended.
		    If not present, then Vim won't become the owner of the
		windowing system's global selection unless explicitly told to
		by a yank or delete operation for the "* register.

	  'f'	Foreground: Don't use fork() to detach the GUI from the shell
		where it was started.  Use this for programs that wait for the
		editor to finish (e.g., an e-mail program).  Alternatively you
		can use "gvim -f" or ":gui -f" to start the GUI in the
		foreground.  |gui-fork|
		Note: Set this option in the vimrc file.  The forking may have
		happened already when the gvimrc file is read.

	  'i'	Use a Vim icon.  For GTK with KDE it is used in the left-upper
		corner of the window.  It's black&white on non-GTK, because of
		limitations of X11.  For a color icon, see |X11-icon|.

	  'm'	Menu bar is present.
	  'M'	The system menu "$VIMRUNTIME/menu.vim" is not sourced.  Note
		that this flag must be added in the .vimrc file.  When the
		.gvimrc file is sourced the system menu has already been
		loaded.
	  'g'	Grey menu items: Make menu items that are not active grey.  If
		'g' is not included inactive menu items are not shown at all.
		Exception: Athena will always use grey menu items.

	  't'	Include tearoff menu items.  Currently only works for Win32,
		GTK+, and Motif 1.2 GUI.
	  'T'	Include Toolbar.  Currently only in Win32 and GTK+ GUI.

	  'r'	Right-hand scrollbar is present when 'r' is included.
	  'l'	Left-hand scrollbar is present when 'l' is included.
	  'b'	Bottom (horizontal) scrollbar is present when 'b' is included.

	And yes, you may even have scrollbars on the left AND the right if
	you really want to :-).  See |gui-scrollbars| for more information.

	  'v'	Use a vertical button layout for dialogs.  When not included,
		a horizontal layout is preferred, but when it doesn't fit a
		vertical layout is used anyway.
	  'p'	Use Pointer callbacks for X11 GUI.  This is required for some
		window managers.  If the cursor is not blinking or hollow at
		the right moment, try adding this flag.  This must be done
		before starting the GUI.  Set it in your gvimrc.  Adding or
		removing it after the GUI has started has no effect.

						*'guipty'* *'noguipty'*
'guipty'		boolean	(default on)
			global
			{not in Vi}
			{only available when compiled with GUI enabled}
	Only in the GUI: If on, an attempt is made to open a pseudo-tty for
	I/O to/from shell commands.  See |gui-pty|.

					*'helpfile'* *'hf'*
'helpfile' 'hf'		string	(default (MSDOS)  "$VIMRUNTIME\doc\help.txt"
					 (others) "$VIMRUNTIME/doc/help.txt")
			global
			{not in Vi}
	Name of the help file.  All help files should be placed together in
	one directory.  Environment variables are expanded |:set_env|.  For
	example: "$VIMRUNTIME/doc/help.txt".  If $VIMRUNTIME is not set, $VIM
	is also tried.  Also see |$VIMRUNTIME| and |option-backslash|
	about including spaces and backslashes.

						*'helpheight'* *'hh'*
'helpheight' 'hh'	number	(default 20)
			global
			{not in Vi}
	Minimal initial height of the help window when it is opened with the
	":help" command.  The initial height of the help window is half of the
	current window, or (when the 'ea' option is on) the same as other
	windows.  When the height is less than 'helpheight', the height is
	set to 'helpheight'.  Set to zero to disable.

				     *'hidden'* *'hid'* *'nohidden'* *'nohid'*
'hidden' 'hid'		boolean	(default off)
			global
			{not in Vi}
	When off a buffer is unloaded when it is |abandon|ed.  When on a
	buffer becomes hidden when it is |abandon|ed.  If the buffer is still
	displayed in another window, it does not become hidden, of course.
	The commands that move through the buffer list sometimes make a buffer
	hidden although the 'hidden' option is off: When the buffer is
	modified, 'autowrite' is off or writing is not possible, and the '!'
	flag was used.  See also |windows.txt|.
	WARNING: It's easy to forget that you have changes in hidden buffers.
	Think twice when using ":q!" or ":qa!".

						*'highlight'* *'hl'*
'highlight' 'hl'	string	(default (as a single string):
				     "8:SpecialKey,@:NonText,d:Directory,
				     e:ErrorMsg,i:IncSearch,l:Search,m:MoreMsg,
				     M:ModeMsg,n:LineNr,r:Question,
				     s:StatusLine,S:StatusLineNC,t:Title,
				     v:Visual,w:WarningMsg,W:WildMenu")
			global
			{not in Vi}
	This option can be used to set highlighting mode for various
	occasions.  It is a comma separated list of character pairs.  The
	first character in a pair gives the occasion, the second the mode to
	use for that occasion.  The occasions are:
	|hl-SpecialKey|	 8  Meta and special keys listed with ":map"
	|hl-NonText|	 @  '~' and '@' at the end of the window and
			    characters from 'showbreak'
	|hl-Directory|	 d  directories in CTRL-D listing and other special
			    things in listings
	|hl-ErrorMsg|	 e  error messages
			 h  (obsolete, ignored)
	|hl-IncSearch|	 i  'incsearch' highlighting
	|hl-Search|	 l  last search pattern highlighting (see 'hlsearch')
	|hl-MoreMsg|	 m  |more-prompt|
	|hl-ModeMsg|	 M  Mode (e.g., "-- INSERT --")
	|hl-LineNr|	 n  line number for ":number" and ":#" commands
	|hl-Question|	 r  |hit-return| prompt and yes/no questions
	|hl-StatusLine|	 s  status line of current window |status-line|
	|hl-StatusLineNC| S  status lines of not-current windows
	|hl-Title|	 t  Titles for output from ":set all", ":autocmd" etc.
	|hl-Visual|	 v  Visual mode
	|hl-VisualNOS|	 V  Visual mode when Vim does is "Not Owning the
			    Selection" Only X11 Gui's |gui-x11| and
			    |xterm-clipboard|.
	|hl-WarningMsg|	 w  warning messages
	|hl-WildMenu|	 W  wildcard matches displayed for 'wildmenu'

	The display modes are:
		r	reverse		(termcap entry "mr" and "me")
		i	italic		(termcap entry "ZH" and "ZR")
		b	bold		(termcap entry "md" and "me")
		s	standout	(termcap entry "so" and "se")
		u	underline	(termcap entry "us" and "ue")
		n	no highlighting
		-	no highlighting
		:	use a highlight group
	The default is used for occasions that are not included.
	If you want to change what the display modes do, see |dos-colors|
	for an example.
	When using the ':' display mode, this must be followed by the name of
	a highlight group.  A highlight group can be used to define any type
	of highlighting, including using color.  See |:highlight| on how to
	define one.  The default uses a different group for each occasion.
	See |highlight-default| for the default highlight groups.

				 *'hlsearch'* *'hls'* *'nohlsearch'* *'nohls'*
'hlsearch' 'hls'	boolean	(default off)
			global
			{not in Vi}
			{not available when compiled without the
			|+extra_search| feature}
	When there is a previous search pattern, highlight all its matches.
	The type of highlighting used can be set with the 'l' occasion in the
	'highlight' option.  This uses the "Search" highlight group by
	default.  Note that only the matching text is highlighted, any offsets
	are not applied.
	See also: 'incsearch'.
	When you get bored looking at the highlighted matches, you can turn it
	off with |:nohlsearch|.  As soon as you use a search command, the
	highlighting comes back.
	NOTE: This option is reset when 'compatible' is set.

						*'history'* *'hi'*
'history' 'hi'		number	(Vim default: 20, Vi default: 0)
			global
			{not in Vi}
	A history of ":" commands, and a history of previous search patterns
	are remembered.  This option decides how many entries may be stored in
	each of these histories (see |cmdline-editing|).
	NOTE: This option is set to the Vi default value when 'compatible' is
	set and to the Vim default value when 'compatible' is reset.

					 *'hkmap'* *'hk'* *'nohkmap'* *'nohk'*
'hkmap' 'hk'		boolean (default off)
			global
			{not in Vi}
			{only available when compiled with the |+rightleft|
			feature}
	When on, the keyboard is mapped for the Hebrew character set.
	Normally you would set 'allowrevins' and use CTRL-_ in insert mode to
	toggle this option.  See |rightleft.txt|.
	NOTE: This option is reset when 'compatible' is set.

				 *'hkmapp'* *'hkp'* *'nohkmapp'* *'nohkp'*
'hkmapp' 'hkp'		boolean (default off)
			global
			{not in Vi}
			{only available when compiled with the |+rightleft|
			feature}
	When on, phonetic keyboard mapping is used.  'hkmap' must also be on.
	This is useful if you have a non-Hebrew keyboard.
	See |rightleft.txt|.
	NOTE: This option is reset when 'compatible' is set.

						*'icon'* *'noicon'*
'icon'			boolean	(default off, on when title can be restored)
			global
			{not in Vi}
			{not available when compiled without the |+title|
			feature}
	When on, the icon text of the window will be set to the value of
	'iconstring' (if it is not empty), or to the name of the file
	currently being edited.  Only the last part of the name is used.
	Overridden by the 'iconstring' option.
	Only works if the terminal supports setting window icons (currently
	only X11 GUI and terminals with a non-empty 't_IS' option - these are
	Unix xterm and iris-ansi by default, where 't_IS' is taken from the
	builtin termcap).
	When Vim was compiled with HAVE_X11 defined, the original icon will be
	restored if possible |X11|. See |X11-icon| for changing the icon on
	X11.

						*'iconstring'*
'iconstring'		string	(default "")
			global
			{not in Vi}
			{not available when compiled without the |+title|
			feature}
	When this option is not empty, it will be used for the icon text of
	the window.  This happens only when the 'icon' option is on.
	Only works if the terminal supports setting window icon text
	(currently only X11 GUI and terminals with a non-empty 't_IS' option).
	Does not work for MS Windows.
	When Vim was compiled with HAVE_X11 defined, the original icon will be
	restored if possible |X11|.
	When this option contains printf-style '%' items, they will be
	expanded according to the rules used for 'statusline'.  See
	'titlestring' for example settings.
	{not available when compiled without the |+statusline| feature}

			*'ignorecase'* *'ic'* *'noignorecase'* *'noic'*
'ignorecase' 'ic'	boolean	(default off)
			global
	Ignore case in search patterns.  Also used when searching in the tags
	file.  Also see 'smartcase'.

						*'include'* *'inc'*
'include' 'inc'		string	(default "^#\s*include")
			global
			{not in Vi}
	Pattern to be used to find an include command.  It is a search
	pattern, just like for the "/" command (See |pattern|).  The default
	value is for C programs.  This option is used for the commands "[i",
	"]I", "[d", etc..  The 'isfname' option is used to recognize the file
	name that comes after the matched pattern.  See |option-backslash|
	about including spaces and backslashes.

				 *'incsearch'* *'is'* *'noincsearch'* *'nois'*
'incsearch' 'is'	boolean	(default off)
			global
			{not in Vi}
			{not available when compiled without the
			|+extra_search| feature}
	While typing a search pattern, show immediately where the so far
	typed pattern matches.  The matched string is highlighted.  If the
	pattern is invalid or not found, nothing is shown.  The screen will
	be updated often, this is only useful on fast terminals.  Note that
	the match will be shown, but the cursor is not actually positioned
	there.  You still need to finish the search command with <CR> to move
	the cursor.  The highlighting can be set with the 'i' flag in
	'highlight'.  See also: 'hlsearch'.
	NOTE: This option is reset when 'compatible' is set.

			*'infercase'* *'inf'* *'noinfercase'* *'noinf'*
'infercase' 'inf'	boolean	(default off)
			local to buffer
			{not in Vi}
	When doing keyword completion in insert mode |ins-completion|, and
	'ignorecase' is also on, the case of the match is adjusted.  If the
	typed text contains a lowercase letter where the match has an upper
	case letter, the completed part is made lower case.  If the typed text
	has no lower case letters and the match has a lower case letter where
	the typed text has an upper case letter, and there is a letter before
	it, the completed part is made uppercase.

			*'insertmode'* *'im'* *'noinsertmode'* *'noim'*
'insertmode' 'im'	boolean	(default off)
			global
			{not in Vi}
	Makes Vim work in a way that Insert mode is the default mode.  Useful
	if you want to use Vim as a modeless editor.
	These Insert mode commands will be useful:
	- Use the cursor keys to move around.
	- Use CTRL-O to execute one Normal mode command |i_CTRL-O|).  When
	  this is a mapping, it is executed as if 'insertmode' was off.
	  Normal mode remains active until the mapping is finished.
								*i_CTRL-L*
	- Use CTRL-L to execute a number of Normal mode commands, then use
	  <Esc> to get back to Insert mode.

	These items change when 'insertmode' is set:
	- when starting to edit of a file, Vim goes to Insert mode.
	- <Esc> in Insert mode is a no-op and beeps.
	- <Esc> in Normal mode makes Vim go to Insert mode.
	- CTRL-L in Insert mode is a command, it is not inserted.
	- CTRL-Z in Insert mode suspends Vim, see |CTRL-Z|.	*i_CTRL-Z*
	However, when <Esc> is used inside a mapping, it behaves like
	'insertmode' was not set.  This was done to be able to use the same
	mappings with 'insertmode' set or not set.

	NOTE: This option is reset when 'compatible' is set.

						*'isfname'* *'isf'*
'isfname' 'isf'		string	(default for MS-DOS, Win32 and OS/2:
					    "@,48-57,/,.,-,_,+,,,$,:,!,\"
				 for AMIGA: "@,48-57,/,.,-,_,+,,,$,:"
				 otherwise: "@,48-57,/,.,-,_,+,,,$,~")
			global
			{not in Vi}
	The characters given by this option are included in file names and
	path names.  Filenames are used for commands like "gf", "[i" and in
	the tags file.  It is also used for "\f" in a |pattern|.
	Besides the characters in this option characters that are defined by
	the C function isalpha() are also always included (this depends on the
	character set and "locale").

	Note that on systems using a backslash as path separator, Vim tries to
	do its best to make it work as you would expect.  That is a bit
	tricky, since Vi originally used the backslash to escape special
	characters.  Vim on will not remove a backslash in front of a normal
	file name character on these systems, but it will on Unix and alikes.

	The format of this option is a list of parts, separated with commas.
	Each part can be a single character number or a range.  A range is two
	character numbers with '-' in between.  A character number can be a
	decimal number between 0 and 255 or the ASCII character itself (does
	not work for digits).  Example:
		"_,-,128-140,#-43"	(include '_' and '-' and the range
					128 to 140 and '#' to 43)
	If a part starts with '^', the following character number or range
	will be excluded from the option.  The option is interpreted from left
	to right.  Put the excluded character after the range where it is
	included.  To include '^' itself use it as the last character of the
	option or the end of a range.  Example:
		"^a-z,#,^"	(exclude 'a' to 'z', include '#' and '^')
	If the character is '@', all characters where isalpha() returns TRUE
	are included.  Normally these are the characters a to z and A to Z,
	plus accented characters.  To include '@' itself use "@-@".  Examples:
		"@,^a-z"	All alphabetic characters, excluding lower
				case letters.
		"a-z,A-Z,@-@"	All letters plus the '@' character.
	A comma can be included by using it where a character number is
	expected.  Example:
		"48-57,,,_"	Digits, command and underscore.
	A comma can be excluded by prepending a '^'.  Example:
		" -~,^,,9"	All characters from space to '~', excluding
				comma, plus <Tab>.
	See |option-backslash| about including spaces and backslashes.

						*'isident'* *'isi'*
'isident' 'isi'		string	(default for MS-DOS, Win32 and OS/2:
					   "@,48-57,_,128-167,224-235"
				otherwise: "@,48-57,_,192-255")
			global
			{not in Vi}
	The characters given by this option are included in identifiers.
	Identifiers are used in recognizing environment variables and after a
	match of the 'define' option.  It is also used for "\i" in a
	|pattern|. See 'isfname' for a description of the format of this
	option.
	Careful: If you change this option, it might break expanding
	environment variables.  E.g., when '/' is included and Vim tries to
	expand "$HOME/.viminfo".  Maybe you should change 'iskeyword' instead.

						*'iskeyword'* *'isk'*
'iskeyword' 'isk'	string (Vim default for MS-DOS and Win32:
					    "@,48-57,_,128-167,224-235"
				   otherwise:  "@,48-57,_,192-255"
				Vi default: "@,48-57,_")
			local to buffer
			{not in Vi}
	Keywords are used in searching and recognizing with many commands:
	"w", "*", "[i", etc.  It is also used for "\k" in a |pattern|.  See
	'isfname' for a description of the format of this option.  For C
	programs you could use "a-z,A-Z,48-57,_,.,-,>".
	For a help file it is set to all non-blank printable characters except
	'*', '"' and '|' (so that CTRL-] on a command finds the help for that
	command).
	When the 'lisp' option is on the '-' character is always included.
	NOTE: This option is set to the Vi default value when 'compatible' is
	set and to the Vim default value when 'compatible' is reset.

						*'isprint'* *'isp'*
'isprint' 'isp'	string	(default for MS-DOS, Win32, OS/2 and Macintosh:
				"@,~-255"; otherwise: "@,161-255")
			global
			{not in Vi}
	The characters given by this option are displayed directly on the
	screen.  It is also used for "\p" in a |pattern|.  The characters from
	space (ascii 32) to '~' (ascii 126) are always displayed directly,
	even when they are not included in 'isprint' or excluded.  See
	'isfname' for a description of the format of this option.
	Non-printable characters are displayed with two characters:
		  0 -  31	"^@" - "^_"
		 32 - 126	always single characters
		   127		"^?"
		128 - 159	"~@" - "~_"
		160 - 254	"| " - "|~"
		   255		"~?"

			*'joinspaces'* *'js'* *'nojoinspaces'* *'nojs'*
'joinspaces' 'js'	boolean	(default on)
			global
			{not in Vi}
	Insert two spaces after a '.', '?' and '!' with a join command.
	When 'cpoptions' includes the 'j' flag, only do this after a '.'.
	Otherwise only one space is inserted.
	NOTE: This option is set when 'compatible' is set.

							*'key'*
'key'			string	(default "")
			local to buffer
			{not in Vi}
	The key that is used for encrypting and decrypting the current buffer.
	See |encryption|.
	Careful: Do not set the key value by hand, someone might see the typed
	key.  Use the |:X| command.  But you can make 'key' empty:
>		set key=
	It is not possible to get the value of this option with ":set key" or
	"echo &key".  This is to avoid showing it to someone who shouldn't
	know.  It also means you cannot see it yourself once you have set it,
	be careful not to make a typing error!

					*'keymodel'* *'km'*
'keymodel' 'km'		string	(default "")
			global
			{not in Vi}
	List of comma separated words, which enable special things that keys
	can do.  These values can be used:
	   startsel	Using a shifted special key starts selection (either
			Select mode or Visual mode, depending on "key" being
			present in 'selectmode').
	   stopsel	Using a not-shifted special key stops selection.
	Special keys in this context are the cursor keys, <End>, <Home>,
	<PageUp> and <PageDown>.
	The 'keymodel' option is set by the |:behave| command.

					*'keywordprg'* *'kp'*
'keywordprg' 'kp'	string	(default "man" or "man -s",  DOS: "",
						OS/2: "view /", VMS: "help")
			global
			{not in Vi}
	Program to use for the |K| command.  Environment variables are
	expanded |:set_env|.  When empty ":help" is used.
	When "man" is used, Vim will automatically translate a count for the
	"K" command to a section number.  Also for "man -s", in which case the
	"-s" is removed when there is no count.
	See |option-backslash| about including spaces and backslashes.
	Example:
>		:set keywordprg=man\ -s
	When this option is set from a |modeline|, while the 'secure' option
	is set, you will get a warning message.

					*'langmap'* *'lmap'*
'langmap' 'lmap'	string	(default "")
			global
			{not in Vi}
			{only available when compiled with the |+langmap|
			feature}
	This option allows support for keyboards that have a mode for a
	special language.  The idea is that when you are typing text in Insert
	mode your keyboard is switched in the special language mode, you get
	different key codes for the special characters.  When in command mode
	the 'langmap' option takes care of translating these special
	characters to the original meaning of the key.  This means you don't
	have to change the keyboard mode to be able to execute normal mode
	commands.

	Example (for greek):					*greek*
>	    :set langmap=ÁA,ÂB,ØC,ÄD,ÅE,ÖF,ÃG,ÇH,ÉI,ÎJ,ÊK,ËL,ÌM,ÍN,ÏO,ÐP,QQ,ÑR,ÓS,ÔT,ÈU,ÙV,WW,×X,ÕY,ÆZ,áa,âb,øc,äd,åe,öf,ãg,çh,éi,îj,êk,ël,ìm,ín,ïo,ðp,qq,ñr,ós,ôt,èu,ùv,òw,÷x,õy,æz
	Example (exchanges meaning of z and y for commands):
>	    :set langmap=zy,yz,ZY,YZ

	The 'langmap' option is a list of parts, separated with commas.  Each
	part can be in one of two forms:
	1.  A list of pairs.  Each pair is a "from" character immediately
	    followed by the "to" character.  Examples: "aA", "aAbBcC".
	2.  A list of "from" characters, a semi-colon and a list of "to"
	    characters.  Example: "abc;ABC"
	Example: "aA,fgh;FGH,cCdDeE"
	Special characters need to be preceded with a backslash.  These are
	";", ',' and backslash itself.

	This will allow you to activate vim actions without having to switch
	back and forth between the languages.  Your language characters will
	be understood as normal vim English characters (according to the
	langmap mappings) in the following cases:
	 o Normal/Visual mode (commands, buffer/register names, user mappings)
	 o Insert/Replace Mode: Register names after CTRL-R
	 o Insert/Replace Mode: Mappings
	Characters entered in Command-line mode will NOT be affected by
	this option.   Note that this option can be changed at any time
	allowing to switch between mappings for different languages/encodings.
	Use a mapping to avoid having to type it each time!

					*'laststatus'* *'ls'*
'laststatus' 'ls'	number	(default 1)
			global
			{not in Vi}
	The value of this option influences when the last window will have a
	status line:
		0: never
		1: only if there are at least two windows
		2: always
	The screen looks nicer with a status line if you have several
	windows, but it takes another screen line. |status-line|

			*'lazyredraw'* *'lz'* *'nolazyredraw'* *'nolz'*
'lazyredraw' 'lz'	boolean	(default off)
			global
			{not in Vi}
	When this option is set, the screen will not be redrawn while
	executing macros, registers and other commands that have not been
	typed.

			*'linebreak'* *'lbr'* *'nolinebreak'* *'nolbr'*
'linebreak' 'lbr'	boolean	(default off)
			local to window
			{not in Vi}
			{not available when compiled without the  |+linebreak|
			feature}
	If on Vim will wrap long lines at a character in 'breakat' rather
	than at the last character that fits on the screen.  Unlike
	'wrapmargin' and 'textwidth', this does not insert <EOL>s in the file,
	it only affects the way the file is displayed, not its contents.  The
	value of 'showbreak' is used to put in front of wrapped lines.  This
	option is not used when the 'wrap' option is off.  Note that <Tab>
	characters after an <EOL> are mostly not displayed correctly.

						*'lines'*
'lines'			number	(default 24 or terminal height)
			global
	Number of lines in the display.  Normally you don't need to set this.
	That is done automatically by the terminal initialization code.
	When Vim is running in the GUI or in a resizable window, setting this
	option may cause the window size to be changed.
	When you set this option and Vim is unable to change the physical
	number of lines of the display, the display may be messed up.

						*'lisp'* *'nolisp'*
'lisp'			boolean	(default off)
			local to buffer
			{not available when compiled without the |+lispindent|
			feature}
	Lisp mode: When a return is typed in insert mode set the indent for
	the next line to Lisp standards (well, sort of).  Also happens with
	"cc" or "S".  'autoindent' must also be on for this to work.  The 'p'
	flag in 'cpoptions' changes the method of indenting: Vi compatible or
	better.
	The '-' character is included in keyword characters.  Redefines the
	"=" operator to use this same indentation algorithm rather than
	calling an external program if 'equalprg' is empty.  This option is
	reset when 'paste' is set.  {Vi: Does it a little bit differently}

						*'list'* *'nolist'*
'list'			boolean	(default off)
			local to window
	List mode: Show tabs as CTRL-I, show end of line with $.  Useful to
	see the difference between tabs and spaces and for trailing blanks.
	Note that this will also affect formatting (set with 'textwidth' or
	'wrapmargin') when 'cpoptions' includes 'L'.  See 'listchars' for
	changing the way tabs are displayed.

						*'listchars'* *'lcs'*
'listchars' 'lcs'	string	(default "eol:$")
			global
			{not in Vi}
	Strings to use in 'list' mode.  It is a comma separated list of string
	settings.
	  eol:c		Character to show at the end of each line.  When
			omitted, there is no extra character at the end of the
			line.
	  tab:xy	Two characters to be used to show a Tab.  The first
			char is used once.  The second char is repeated to
			fill the space that the Tab normally occupies.
			"tab:>-" will show a Tab that takes four spaces as
			">---".  When omitted, a Tab is show as ^I.
	  trail:c	Character to show for trailing spaces.  When omitted,
			trailing spaces are blank.
	  extends:c	Character to show in the last column, when 'wrap' is
			off and the line continues beyond the right of the
			screen.
	The characters ':' and ',' cannot be used.
	Examples:
>	    :set lcs=tab:>-,trail:-
>	    :set lcs=tab:>-,eol:<
	The "NonText" highlighting will be used for these characters.

						*'magic'* *'nomagic'*
'magic'			boolean	(default on)
			global
	Changes the special characters that can be used in search patterns.
	See |pattern|.  NOTE: To avoid portability problems with using
	patterns, always keep this option at the default "on".

						*'makeef'* *'mef'*
'makeef' 'mef'		string	(Amiga default: "t:vim##.Err",
					  Unix: "/tmp/vim##.err",
					others: "vim##.err")
			global
			{not in Vi}
			{not available when compiled without the |+quickfix|
			feature}
	Name of the errorfile for the |:make| command (see |:make_makeprg|)
	and the |:grep| command.
	When "##" is included, it is replaced by a number to make the name
	unique.  This makes sure that the ":make" command doesn't overwrite an
	existing file.
	NOT used for the ":cf" command.  See 'errorfile' for that.
	Environment variables are expanded |:set_env|.
	See |option-backslash| about including spaces and backslashes.

						*'makeprg'* *'mp'*
'makeprg' 'mp'		string	(default "make")
			global
			{not in Vi}
	Program to use for the ":make" command.  See |:make_makeprg|.  This
	option may contain '%' and '#' characters, which are expanded like
	when used in a command-line.  Environment variables are expanded
	|:set_env|.  See |option-backslash| about including spaces and
	backslashes.  Note that a '|' must be escaped twice: once for ":set"
	and once for the interpretation of a command.  When you use a filter
	called "myfilter" do it like this:
>	    :set makeprg=gmake\ \\\|\ myfilter
	The placeholder "$*" can be given (even multiple times) to specify
	where the arguments will be included, for example:
>	    :set makeprg=latex\ \\\\nonstopmode\ \\\\input\\{$*}
	When this option is set from a |modeline|, while the 'secure' option
	is set, you will get a warning message.

						*'matchpairs'* *'mps'*
'matchpairs' 'mps'	string	(default "(:),{:},[:]")
			local to buffer
			{not in Vi}
	Characters that form pairs.  The |%| command jumps from one to the
	other.  Currently only single character pairs are allowed, and they
	must be different.  The characters must be separated by a colon.  The
	pairs must be separated by a comma.  Example for including '<' and '>'
	(HTML):
>		set mps+=<:>
	A more exotic example, to jump between the '=' and ';' in an
	assignment, useful for languages like C and Java:
>		au FileType c,cpp,java set mps+==:;

						*'matchtime'* *'mat'*
'matchtime' 'mat'	number	(default 5)
			global
			{not in Vi}{in Nvi}
	Tenths of a second to show the matching paren, when 'showmatch' is
	set.  Note that this is not in milliseconds, like other options that
	set a time.  This is to be compatible with Nvi.

						*'maxfuncdepth'* *'mfd'*
'maxfuncdepth' 'mfd'	number	(default 100)
			global
			{not in Vi}
	Maximum depth of function calls for user functions.  This normally
	catches endless recursion.  When using a recursive function with
	more depth, set 'maxfuncdepth' to a bigger number.  But this will use
	more memory, there is the danger of failing when memory is exhausted.
	See also |:function|.

						*'maxmapdepth'* *'mmd'*
'maxmapdepth' 'mmd'	number	(default 1000)
			global
			{not in Vi}
	Maximum number of times a mapping is done without resulting in a
	character to be used.  This normally catches endless mappings, like
	":map x y" with ":map y x".  It still does not catch ":map g wg",
	because the 'w' is used before the next mapping is done.  See also
	|key-mapping|.

						*'maxmem'* *'mm'*
'maxmem' 'mm'		number	(default 512)
			global
			{not in Vi}
	Maximum amount of memory (in Kbyte) to use for one buffer.  When this
	limit is reached allocating extra memory for a buffer will cause
	other memory to be freed.  Maximum value 2000000.  Use this to work
	without a limit.  Also see 'maxmemtot'.

						*'maxmemtot'* *'mmt'*
'maxmemtot' 'mmt'	number	(default 2048, or half the amount of memory
				available)
			global
			{not in Vi}
	Maximum amount of memory (in Kbyte) to use for all buffers together.
	Maximum value 2000000.  Use this to work without a limit.  Also see
	'maxmem'.

				   *'modeline'* *'ml'* *'nomodeline'* *'noml'*
'modeline' 'ml'		boolean	(Vim default: on, Vi default: off)
			local to buffer
						*'modelines'* *'mls'*
'modelines' 'mls'	number	(default 5)
			global
			{not in Vi}
	If 'modeline' is on 'modelines' gives the number of lines that is
	checked for set commands.  If 'modeline' is off or 'modelines' is zero
	no lines are checked.  See |modeline|.
	NOTE: 'modeline' is set to the Vi default value when 'compatible' is
	set and to the Vim default value when 'compatible' is reset.

				 *'modified'* *'mod'* *'nomodified'* *'nomod'*
'modified' 'mod'	boolean	(default off)
			local to buffer
			{not in Vi}
	When on the buffer is considered to be modified.  This option is set
	by every command that makes a change to the buffer.  Only the undo
	command may reset it, when all changes have been undone.

						*'more'* *'nomore'*
'more'			boolean	(Vim default: on, Vi default: off)
			global
			{not in Vi}
	When on, listings pause when the whole screen is filled.  You will get
	the |more-prompt|.  When this option is off there are no pauses, the
	listing continues until finished.
	NOTE: This option is set to the Vi default value when 'compatible' is
	set and to the Vim default value when 'compatible' is reset.

						*'mouse'*
'mouse'			string	(default "", "a" for GUI, MS-DOS and Win32)
			global
			{not in Vi}
	Enable the use of the mouse.  Only works for certain terminals
	(xterm, MS-DOS, Win32 |win32-mouse| and Linux console with gpm).  For
	using the mouse in the GUI, see |gui-mouse|.
	The mouse can be enabled for different modes:
		n	Normal mode
		v	Visual mode
		i	Insert mode
		c	Command-line mode
		h	all previous modes when editing a help file
		a	all previous modes
		r	for |hit-return| and |more-prompt| prompt
	Normally you would enable the mouse in all four modes with:
>		:set mouse=a
	When the mouse is not enabled, the GUI will still use the mouse for
	modeless selection.  This doesn't move the text cursor.

	See |mouse-using|.  Also see |'clipboard'|.

	Note: When enabling the mouse in an xterm, GUI copy/paste will be used
	if there is access to an X-server.  The xterm copy/paste can still be
	used by keeping the shift key pressed.  The GUI copy/paste only works
	in Normal, Visual and Insert mode.  This setting is suggested to allow
	normal xterm selection in Command-line mode:
>		:set mouse=nvi
	Also see the 'clipboard' option.

			*'mousefocus'* *'mousef'* *'nomousefocus'* *'nomousef'*
'mousefocus' 'mousef'	boolean	(default off)
			global
			{not in Vi}
			{only works in the GUI}
	The window that the mouse pointer is on is automatically activated.
	When changing the window layout or window focus in another way, the
	mouse pointer is moved to the window with keyboard focus.  Off is the
	default because it makes using the pull down menus a little goofy, as
	a pointer transit may activate a window unintentionally.

			*'mousehide'* *'mh'* *'nomousehide'* *'nomh'*
'mousehide' 'mh'	boolean	(default off)
			global
			{not in Vi}
			{only works in the GUI}
	When on, the mouse pointer is hidden when characters are typed.
	The mouse pointer is restored when the mouse is moved.

						*'mousemodel'* *'mousem'*
'mousemodel' 'mousem'	string	(default "extend", "popup" for MS-DOS and Win32)
			global
			{not in Vi}
	Sets the model to use for the mouse.  The name mostly specifies what
	the right mouse button is used for:
	   extend	Right mouse button extends a selection.  This works
			like in an xterm.
	   popup	Right mouse button pops up a menu.  The shifted left
			mouse button extends a selection.  This works like
			with Microsoft Windows
	   popup_setpos Like "popup", but the cursor will be moved to the
			position where the mouse was clicked, and thus the
			selected operation will act upon the clicked object.
			If clicking inside a selection, that selection will
			be acted upon, ie. no cursor move.  This implies of
			course, that right clicking outside a selection will
			end Visual mode.
	Overview of what button does what for each model:
	mouse		    extend		popup(_setpos) ~
	left click	    place cursor	place cursor
	left drag	    start selection	start selection
	shift-left	    search word		extend selection
	right click	    extend selection	popup menu (place cursor)
	right drag	    extend selection	-
	middle click	    paste		paste

	In the "popup" model the right mouse button produces a pop-up menu.
	You need to define this first, see |popup-menu|.

	Note that you can further refine the meaning of buttons with mappings.
	See |gui-mouse-mapping|.  But mappings are NOT used for modeless
	selection (because that's handled in the GUI code directly).

	The 'mousemodel' option is set by the |:behave| command.

						*'mousetime'* *'mouset'*
'mousetime' 'mouset'	number	(default 500)
			global
			{not in Vi}
	Only for GUI, MS-DOS, Win32 and Unix with xterm.  Defines the maximum
	time in msec between two mouse clicks for the second click to be
	recognized as a multi click.

							*'nrformats'* *'nf'*
'nrformats' 'nf'	string	(default "octal,hex")
			local to buffer
			{not in Vi}
	This defines what bases Vim will consider for numbers when using the
	CTRL-A and CTRL-X commands for adding to and subtracting from a number
	respectively; see |CTRL-A| for more info on these commands.
	If "octal" is included, numbers that start with a zero will be
	considered to be octal.  Example: Using CTRL-A on "007" results in
	"010".
	If "hex" is included, numbers starting with "0x" or "0X" will be
	considered to be hexadecimal.  Example: Using CTRL-X on "0x100"
	results in "0x0ff".
	Numbers which simply begin with a digit in the range 1-9 are always
	considered decimal.  This also happens for numbers that are not
	recognized as octal or hex.

				*'number'* *'nu'* *'nonumber'* *'nonu'*
'number' 'nu'		boolean	(default off)
			local to window
	Print the line number in front of each line.  Tip: If you don't like
	wrapping lines to mix with the line numbers, set the 'showbreak'
	option to eight spaces:
		:set showbreak=\ \ \ \ \ \ \ \ 
	See |hl-LineNr| for the highlighting used for the number.

					*'osfiletype'* *'oft'*
'osfiletype' 'oft'	string (RISC OS default: "Text",
				others default: "")
			local to buffer
			{not in Vi}
			{only available when compiled with the |+osfiletype|
			feature}
	Some operating systems store extra information about files besides
	name, datastamp and permissions.  This option contains the extra
	information, the nature of which will vary between systems.
	The value of this option is usually set when the file is loaded, and
	use to set the file type when file is written.
	It can affect the pattern matching of the automatic commands.
	|autocmd-osfiletypes|

						*'paragraphs'* *'para'*
'paragraphs' 'para'	string	(default "IPLPPPQPP LIpplpipbp")
			global
	Specifies the nroff macros that separate paragraphs.  These are pairs
	of two letters (see |object-motions|).

						*'paste'* *'nopaste'*
'paste'			boolean	(default off)
			global
			{not in Vi}
	Put Vim in Paste mode.  This is useful if you want to cut or copy
	some text from one window and paste it in Vim.  This will avoid
	unexpected effects.
	Setting this option is useful when using Vim in a terminal, where Vim
	cannot distinguish between typed text and pasted text.  In the GUI, Vim
	knows about pasting and will mostly do the right thing without 'paste'
	being set.  Also in a terminal where Vim handles the mouse clicks
	itself.
	When the 'paste' option is switched on (also when it was already on):
		- mapping in Insert mode and Command-line mode is disabled
		- abbreviations are disabled
		- 'textwidth' is set to 0
		- 'wrapmargin' is set to 0
		- 'autoindent' is reset
		- 'smartindent' is reset
		- 'cindent' is reset
		- 'softtabstop' is set to 0
		- 'lisp' is reset
		- 'revins' is reset
		- 'ruler' is reset
		- 'showmatch' is reset
		- 'formatoptions' is used like it is empty
	NOTE: When you start editing another file while the 'paste' option is
	on, settings from the modelines or autocommands may change the
	settings again, causing trouble when pasting text.  You might want to
	set the 'paste' option again.
	When the 'paste' option is reset the mentioned options are restored to
	the value before the moment 'paste' was switched from off to on.
	Resetting 'paste' before ever setting it does not have any effect.
	Since mapping doesn't work while 'paste' is active, you need to use
	the 'pastetoggle' option to toggle the 'paste' option with some key.

						*'pastetoggle'* *'pt'*
'pastetoggle' 'pt'	string	(default "")
			global
			{not in Vi}
	When non-empty, specifies the key sequence that toggles the 'paste'
	option.  This is like specifying a mapping:
>	    map {keys} :set invpaste<CR>
	Where {keys} is the value of 'pastetoggle'.
	The difference is that it will work even when 'paste' is set.
	'pastetoggle' works in Insert mode and Normal mode, but not in
	Command-line mode.
	Mappings are checked first, thus overrule 'pastetoggle'.  However,
	when 'paste' is on mappings are ignored in Insert mode, thus you can do
	this:
>	    map <F10> :set paste<CR>
>	    map <F11> :set nopaste<CR>
>	    imap <F10> <C-O>:set paste<CR>
>	    imap <F11> <nop>
>	    set pastetoggle=<F11>
	This will make <F10> start paste mode and <F11> stop paste mode.
	Note that typing <F10> in paste mode inserts "<F10>", since in paste
	mode everything is inserted literally, except the 'pasttoggle' key
	sequence.

						*'patchmode'* *'pm'*
'patchmode' 'pm'	string	(default "")
			global
			{not in Vi}
	When non-empty the oldest version of a file is kept.  This can be used
	to keep the original version of a file if you are changing files in a
	source distribution.  Only the first time that a file is edited a copy
	of the original file will be kept.  The name of the copy is the name
	of the original file with the string in the 'patchmode' option
	appended.  This option should start with a dot.  Use a string like
	".org".  'backupdir' must not be empty for this to work (Detail: The
	backup file is renamed to the patchmode file after the new file has
	been successfully written, that's why it must be possible to write a
	backup file).  If there was no file to be backed up, an empty file is
	created.

						*'path'* *'pa'*
'path' 'pa'		string	(default on Unix: ".,/usr/include,,"
				   on OS/2:       ".,/emx/include,,"
				   other systems: ".,,")
			global
			{not in Vi}
	This is a list of directories which will be searched when using the
	|gf|, [f, ]f, ^Wf, |:find| and other commands, provided that the file
	being searched for has a relative path (not starting with '/').  The
	directories in the 'path' option may be relative or absolute.
	- Use commas to separate directory names:
>		:set path=.,/usr/local/include,/usr/include
	- Spaces can also be used to separate directory names (for backwards
	  compatibility with version 3.0).  To have a space in a directory
	  name, precede it with an extra backslash, and escape the space:
>		:set path=.,/dir/with\\\ space
	- To include a comma in a directory name precede it with an extra
	  backslash:
>		:set path=.,/dir/with\\,comma
	- To search relative to the directory of the current file, use:
>		:set path=.
	- To search in the current directory use an empty string between two
	  commas:
>		:set path=,,
	- A directory name may end in a ':' or '/'.
	- Environment variables are expanded |:set_env|.
	- Use wildcards to specify directories more freely, e.g.,
>		:set path=/usr/include/*
	  means all subdirectories in /usr/include (but not /usr/include
	  itself).
	- Use '**' if you want the whole subtree to be searched:
>		:set path=/home/user_x/src/**
	  means search in the whole subtree under "/home/usr_x/src". (to avoid
	  endless recursion, the depth is restricted to 100 levels)
	- Give wildcards and recursions in any order:
>		:set path=/**/include/**
	  specifies a path with at least one directory /include/ in it.
	- The set of allowed wildcards and the possible usage depend on the
	  operating system, but /etc/*/etc and /etc/**/etc work on any
	  system. |:_%<|
	- Careful with '\' characters, type two to get one in the option:
>		:set path=.,c:\\include
	  Or just use '/' instead:
>		:set path=.,c:/include
	Don't forget "." or files won't even be found in the same directory as
	the file!
	The maximum length is limited.  How much depends on the system, mostly
	it is something like 256 or 1024 characters.
	You can check if all the include files are found, using the value of
	'path', see |:checkpath|.
	The use of |:set+=| and |:set-=| is preferred when adding or removing
	directories from the list.  This avoids problems when a future version
	uses another default.  To remove the current directory use:
>		:set path-=
	To add the current directory use:
>		:set path+=
	To use an environment variable, you probably need to replace the
	separator.  Here is an example to append $INCL, in which directory
	names are separated with a semi-colon:
>		let &path = &path . "," . substitute($INCL, ';', ',', 'g')
	Replace the ';' with a ':' or whatever separator is used.  Note that
	this doesn't work when $INCL contains a comma or white space.

				    *'previewheight'* *'pvh'*
'previewheight' 'pvh'	number (default 12)
			global
			{not in Vi}
	Default height for a preview window.  Used for |:ptag| and associated
	commands.  Used for |CTRL-W_}| when no count is given.

				   *'readonly'* *'ro'* *'noreadonly'* *'noro'*
'readonly' 'ro'		boolean	(default off)
			local to buffer
			{not in Vi}
	If on, writes fail unless you use a '!'.  Protects you from
	accidentally overwriting a file.  Default on when Vim is started
	in read-only mode ("vim -R") or when the executable is called "view".
	{not in Vi:}  When using the ":view" command the 'readonly' option is
	set for the newly edited buffer.  When using ":w!" the 'readonly'
	option is reset for the current buffer.

						*'remap'* *'noremap'*
'remap'			boolean	(default on)
			global
	Allows for mappings to work recursively.  If you do not want this for
	a single entry, use the :noremap[!] command.

						*'report'*
'report'		number	(default 2)
			global
	Threshold for reporting number of lines changed.  When the number of
	changed lines is more than 'report' a message will be given for most
	":" commands.  For the ":substitute" command the number of
	substitutions is used instead of the number of lines.

			 *'restorescreen'* *'rs'* *'norestorescreen'* *'nors'*
'restorescreen' 'rs'	boolean	(default on)
			global
			{not in Vi}  {Windows 95/NT version only}
	When set, the screen contents is restored when exiting Vim.  This also
	happens when executing external commands.

	For non-Windows Vim: You can set or reset the 't_ti' and 't_te'
	options in your .vimrc.  To disable restoring:
		set t_ti= t_te=
	To enable restoring (for an xterm):
		set t_ti=^[7^[[r^[[?47h t_te=^[[?47l^[8
	(Where ^[ is an <Esc>, type CTRL-V <Esc> to insert it)

				*'revins'* *'ri'* *'norevins'* *'nori'*
'revins' 'ri'		boolean	(default off)
			global
			{not in Vi}
			{only available when compiled with the |+rightleft|
			feature}
	Inserting characters in Insert mode will work backwards.  See "typing
	backwards" |ins-reverse|.  This option can be toggled with the CTRL-_
	command in Insert mode, when 'allowrevins' is set.
	NOTE: This option is reset when 'compatible' or 'paste' is set.

				 *'rightleft'* *'rl'* *'norightleft'* *'norl'*
'rightleft' 'rl'	boolean	(default off)
			local to window
			{not in Vi}
			{only available when compiled with the |+rightleft|
			feature}
	When on, display orientation becomes right-to-left, i.e., character
	that are stored in the file appear from the right to the left.  Using
	this option, it is possible to edit files for languages that are
	written from the right to the left such as Hebrew and Arabic.  This
	option is per window, so it is possible to edit mixed files
	simultaneously, or to view the same file in both ways (this is
	sometimes useful when editing Hebrew TeX--XeT files).  See
	|rightleft.txt|.

					 *'ruler'* *'ru'* *'noruler'* *'noru'*
'ruler' 'ru'		boolean	(default off)
			global
			{not in Vi}
			{not available when compiled without the
			|+cmdline_info| feature}
	Show the line and column number of the cursor position, separated by a
	comma.  When there is room, the relative position of the displayed
	text in the file is shown on the far right:
		Top	first line is visible
		Bot	last line is visible
		All	first and last line are visible
		45%	relative position in the file
	If 'rulerformat' is set, it will determine the contents of the ruler.
	Each window has its own ruler.  If a window has a status line, the
	ruler is shown there.  Otherwise it is shown in the last line of the
	screen.  If the statusline is given by 'statusline' (ie. not empty),
	this option takes precedence over 'ruler' and 'rulerformat'
	If there are characters in the line that take two positions on the
	screen, both the "real" column and the screen column are shown,
	separated with a dash.
	For an empty line "0-1" is shown.
	For an empty buffer the line number will also be zero: "0,0-1".
	This option is reset when the 'paste' option is set.
	If you don't want to see the ruler all the time but want to know where
	you are, use "g CTRL-G" |g_CTRL-G|.
	NOTE: This option is reset when 'compatible' is set.

						*'rulerformat'* *'ruf'*
'rulerformat' 'ruf'	string	(default empty)
			global
			{not in Vi}
			{not available when compiled without the |+statusline|
			feature}
	The format of this option, is like that of 'statusline'.  When it is
	not empty it determines the content of the ruler string.  If the
	option has a leading "%{wid}(", then {wid} determines the width of the
	ruler.  The default ruler width is 17 characters.

						*'scroll'* *'scr'*
'scroll' 'scr'		number	(default 'lines' / 2)
			local to window
	Number of lines to scroll with CTRL-U and CTRL-D commands.  Will be
	set to half the number of lines in the window when the window size
	changes.  If you give a count to the CTRL-U or CTRL-D command it will
	be used as the new value for 'scroll'.  Reset to 'lines' / 2 with
	":set scroll=0".   {Vi is a bit different: 'scroll' gives the number
	of screen lines instead of file lines, makes a difference when lines
	wrap}

			*'scrollbind'* *'scb'* *'noscrollbind'* *'noscb'*
'scrollbind' 'scb'	boolean  (default off)
			local to window
			{not in Vi}
			{not available when compiled without the |+scrollbind|
			feature}
	See also |scroll-binding|.  When this option is set, the current
	window scrolls as other scrollbind windows (windows that also have
	this option set) scroll.  This option is useful for viewing the
	differences between two versions of a file.  See |'scrollopt'| for
	options that determine how this option should be interpreted.

						*'scrolljump'* *'sj'*
'scrolljump' 'sj'	number	(default 1)
			global
			{not in Vi}
	Minimal number of lines to scroll when the cursor gets off the
	screen (e.g., with "j").  Not used for scroll commands (e.g., CTRL-E,
	CTRL-D).  Useful if your terminal scrolls very slowly.
	NOTE: This option is set to 1 when 'compatible' is set.

						*'scrolloff'* *'so'*
'scrolloff' 'so'	number	(default 0)
			global
			{not in Vi}
	Minimal number of screen lines to keep above and below the cursor.
	This will make some context visible around where you are working.  If
	you set it to a very large value (999) the cursor line will always be
	in the middle of the window (except at the start or end of the file or
	when long lines wrap).
	NOTE: This option is set to 0 when 'compatible' is set.

						*'scrollopt'* *'sbo'*
'scrollopt' 'sbo'	string	(default "ver,jump")
			global
			{not available when compiled without the |+scrollbind|
			feature}
			{not in Vi}
	This is a comma-separated list of words that specifies how
	'scrollbind' windows should behave.
	The following words are available:
	    ver		Bind vertical scrolling for 'scrollbind' windows
	    hor		Bind horizontal scrolling for 'scrollbind' windows
	    jump	Applies to the offset between two windows for vertical
			scrolling.  This offset is the difference in the first
			displayed line of the bound windows.  When moving
			around in a window, another 'scrollbind' window may
			reach a position before the start or after the end of
			the buffer.  The offset is not changed though, when
			moving back the 'scrollbind' window will try to scroll
			to the desired position when possible.
			When now making that window the current one, two
			things can be done with the relative offset:
			1. When "jump" is not included, the relative offset is
			   adjusted for the scroll position in the new current
			   window.  When going back to the other window, the
			   the new relative offset will be used.
			2. When "jump" is included, the other windows are
			   scrolled to keep the same relative offset.  When
			   going back to the other window, it still uses the
			   same relative offset.
	Also see |scroll-binding|.

						*'sections'* *'sect'*
'sections' 'sect'		string	(default "SHNHH HUnhsh")
			global
	Specifies the nroff macros that separate sections.  These are pairs of
	two letters (See |object-motions|).  The default makes a section start
	at the nroff macros ".SH", ".NH", ".H", ".HU", ".nh" and ".sh".

						*'secure'* *'nosecure'*
'secure'		boolean	(default off)
			global
			{not in Vi}
	When on, ":autocmd", shell and write commands are not allowed in
	".vimrc" and ".exrc" in the current directory and map commands are
	displayed.  Switch it off only if you know that you will not run into
	problems, or when the 'exrc' option is off.  On Unix this option is
	only used if the ".vimrc" or ".exrc" is not owned by you.  This can be
	dangerous if the systems allows users to do a "chown".  You better set
	'secure' at the end of your ~/.vimrc then.
	This option cannot be set from a |modeline|.

						*'selection'* *'sel'*
'selection' 'sel'	string	(default "inclusive")
			global
			{not in Vi}
	This option defines the behavior of the selection.  It is only used
	in Visual and Select mode.
	Possible values:
	   value	past line     inclusive ~
	   old		   no		yes
	   inclusive	   yes		yes
	   exclusive	   yes		no
	"past line" means that the cursor is allowed to be positioned one
	character past the line.
	"inclusive" means that the last character of the selection is included
	in an operation.  For example, when "x" is used to delete the
	selection.

	The 'selection' option is set by the |:behave| command.

						*'selectmode'* *'slm'*
'selectmode' 'slm'	string	(default "")
			global
			{not in Vi}
	This is a comma separated list of words, which specifies when to start
	Select mode instead of Visual mode, when a selection is started.
	Possible values:
	   mouse	when using the mouse
	   key		when using shifted special keys
	   cmd		when using "v", "V" or CTRL-V
	See |Select-mode|.
	The 'selectmode' option is set by the |:behave| command.

						*'sessionoptions'* *'ssop'*
'sessionoptions' 'ssop'	string	(default "buffers,winsize,options,help,blank")
			global
			{not in Vi}
	Changes the effect of the |:mksession| command.  It is a comma
	separated list of words.  Each word enables saving and restoring
	something:
	   word		save and restore ~
	   buffers	hidden and unloaded buffers, not just those in windows
	   globals	global variables that start with an uppercase letter
			and contain at least one lowercase letter.
	   help		the help window
	   blank	empty windows
	   options	options and mappings
	   winpos	position of the GUI vim window
	   resize	size of the screen: 'lines' and 'columns'
	   winsize	window sizes (where possible)
	   slash	backslashes in file names replaced with forward
			slashes
	   unix		with Unix end-of-line format (single <NL>), even when
			on Windows or DOS

	"slash" and "unix" are useful on Windows when sharing session files
	with Unix.  The Unix version of Vim cannot source dos format scripts,
	but the Windows version of Vim can source unix format scripts.

						*'shell'* *'sh'*
'shell' 'sh'		string	(default $SHELL or "sh",
					MS-DOS and Win32: "command",
					OS/2: "cmd")
			global
	Name of the shell to use for ! and :! commands.  When changing the
	value also check the 'shelltype', 'shellpipe', 'shellslash' and
	'shellredir' options.
	It is allowed to give an argument to the command, e.g.  "csh -f".
	See |option-backslash| about including spaces and backslashes.
	Environment variables are expanded |:set_env|.
	For Dos 32 bits (DJGPP), you can set the $DJSYSFLAGS environment
	variable to change the way external commands are executed.  See the
	libc.inf file of DJGPP.
	If the name of the shell contains a space, you might need to enclose
	it in quotes.  Example:
>		:set shell=\"c:\program\ files\unix\sh.exe\"\ -f
	Note the backslash before each quote (to avoid starting a comment) and
	each space (to avoid ending the option value).  Also note that the
	"-f" is not inside the quotes, because it is not part of the command
	name.  And Vim automagically recognizes the backslashes that are path
	separators.
	Under MS-Windows, when the executable ends in ".com" it must be
	included.  Thus setting the shell to "command.com" or "4dos.com"
	works, but "command" and "4dos" do not work for all commands (e.g.,
	filtering).
	For unknown reasons, when using "4dos.com" the current directory is
	changed to "C:\".  To avoid this set 'shell' like this:
>		:set shell=command.com\ /c\ 4dos
	The 'shell' option cannot be set from a |modeline|.

						*'shellcmdflag'* *'shcf'*
'shellcmdflag' 'shcf'	string	(default: "-c", MS-DOS and Win32, when 'shell'
					does not contain "sh" somewhere: "/c")
			global
			{not in Vi}
	Flag passed to the shell to execute "!" and ":!" commands; e.g.,
	"bash.exe -c ls" or "command.com /c dir".  For the MS-DOS-like
	systems, the default is set according to the value of 'shell', to
	reduce the need to set this option by the user.  It's not used for
	OS/2 (EMX figures this out itself).  See |option-backslash| about
	including spaces and backslashes.  See |dos-shell|.
	This option cannot be set from a |modeline|.

						*'shellpipe'* *'sp'*
'shellpipe' 'sp'	string	(default ">", "| tee", "|& tee" or "2>&1| tee")
			global
			{not in Vi}
			{not available when compiled without the |+quickfix|
			feature}
	String to be used to put the output of the ":make" command in the
	error file.  See also |:make_makeprg|.  See |option-backslash| about
	including spaces and backslashes.
	For the Amiga and MS-DOS the default is ">".  The output is directly
	saved in a file and not echoed to the screen.
	For Unix the default it "| tee".  The stdout of the compiler is saved
	in a file and echoed to the screen.  If the 'shell' option is "csh" or
	"tcsh" after initializations, the default becomes "|& tee".  If the
	'shell' option is "sh", "ksh", "zsh" or "bash" the default becomes
	"2>&1| tee".  This means that stderr is also included.
	The initialization of this option is done after reading the ".vimrc"
	and the other initializations, so that when the 'shell' option is set
	there, the 'shellpipe' option changes automatically, unless it was
	explicitly set before.
	When 'shellpipe' is set to an empty string, no redirection of the
	":make" output will be done.  This is useful if you use a 'makeprg'
	that writes to 'makeef' by itself.  If you want no piping, but do
	want to include the 'makeef', set 'shellpipe' to a single space.
	Don't forget to precede the space with a backslash: ":set sp=\ ".
	In the future pipes may be used for filtering and this option will
	become obsolete (at least for Unix).
	This option cannot be set from a |modeline|.

						*'shellquote'* *'shq'*
'shellquote' 'shq'	string	(default: ""; MS-DOS and Win32, when 'shell'
					contains "sh" somewhere: "\"")
			global
			{not in Vi}
	Quoting character(s), put around the command passed to the shell, for
	the "!" and ":!" commands.  The redirection is kept outside of the
	quoting.  See 'shellxquote' to include the redirection.  It's
	probably not useful to set both options.
	This is an empty string by default.  Only known to be useful for
	third-party shells on MS-DOS-like systems, such as the MKS Korn Shell
	or bash, where it should be "\"".  The default is adjusted according
	the value of 'shell', to reduce the need to set this option by the
	user.  See |dos-shell|.
	This option cannot be set from a |modeline|.

						*'shellredir'* *'srr'*
'shellredir' 'srr'	string	(default ">", ">&" or ">%s 2>&1")
			global
			{not in Vi}
	String to be used to put the output of a filter command in a temporary
	file.  See also |:!|.  See |option-backslash| about including spaces
	and backslashes.
	The name of the temporary file can be represented by "%s" if necessary
	(the file name is appended automatically if no %s appears in the value
	of this option).
	The default is ">".  For Unix, if the 'shell' option is "csh", "tcsh"
	or "zsh" during initializations, the default becomes ">&".  If the
	'shell' option is "sh", "ksh" or "bash" the default becomes
	">%s 2>&1".  This means that stderr is also included.
	The initialization of this option is done after reading the ".vimrc"
	and the other initializations, so that when the 'shell' option is set
	there, the 'shellredir' option changes automatically unless it was
	explicitly set before.
	In the future pipes may be used for filtering and this option will
	become obsolete (at least for Unix).
	This option cannot be set from a |modeline|.

			*'shellslash'* *'ssl'* *'noshellslash'* *'nossl'*
'shellslash' 'ssl'	boolean	(default off)
			global
			{not in Vi} {only for MSDOS, MS-Windows and OS/2}
	When set, a forward slash is used when expanding file names.  This is
	useful when a Unix-like shell is used instead of command.com or
	cmd.exe.  Backward slashes can still be typed, but they are changed to
	forward slashes by Vim.
	Note that setting or resetting this option has no effect for existing
	file names, thus this option needs to be set before opening any file
	for best results.  This might change in the future.

						*'shelltype'* *'st'*
'shelltype' 'st'	number	(default 0)
			global
			{not in Vi} {only for the Amiga}
	On the Amiga this option influences the way how the commands work
	which use a shell.
	0 and 1: always use the shell
	2 and 3: use the shell only to filter lines
	4 and 5: use shell only for ':sh' command
	When not using the shell, the command is executed directly.

	0 and 2: use "shell 'shellcmdflag' cmd" to start external commands
	1 and 3: use "shell cmd" to start external commands

						*'shellxquote'* *'sxq'*
'shellxquote' 'sxq'	string	(default: "";
					for Win32, when 'shell' contains "sh"
					somewhere: "\""
					for Unix, when using system(): "\"")
			global
			{not in Vi}
	Quoting character(s), put around the command passed to the shell, for
	the "!" and ":!" commands.  Includes the redirection.  See
	'shellquote' to exclude the redirection.  It's probably not useful
	to set both options.
	This is an empty string by default.  Known to be useful for
	third-party shells when using the Win32 version, such as the MKS Korn
	Shell or bash, where it should be "\"".  The default is adjusted
	according the value of 'shell', to reduce the need to set this option
	by the user.  See |dos-shell|.
	This option cannot be set from a |modeline|.

			*'shiftround'* *'sr'* *'noshiftround'* *'nosr'*
'shiftround' 'sr'	boolean	(default off)
			global
			{not in Vi}
	Round indent to multiple of 'shiftwidth'.  Applies to > and <
	commands.  CTRL-T and CTRL-D in Insert mode always round the indent to
	a multiple of 'shiftwidth' (this is Vi compatible).
	NOTE: This option is reset when 'compatible' is set.

						*'shiftwidth'* *'sw'*
'shiftwidth' 'sw'	number	(default 8)
			local to buffer
	Number of spaces to use for each step of (auto)indent.  Used for
	|'cindent'|, |>>|, |<<|, etc.

						*'shortmess'* *'shm'*
'shortmess' 'shm'	string	(Vim default "filnxtToO", Vi default: "")
			global
			{not in Vi}
	This option helps to avoid all the |hit-return| prompts caused by file
	messages, for example  with CTRL-G, and to avoid some other messages.
	It is a list of flags:
	 flag	meaning when present	~
	  f	use "(3 of 5)" instead of "(file 3 of 5)"
	  i	use "[noeol]" instead of "[Incomplete last line]"
	  l	use "999L, 888C" instead of "999 lines, 888 characters"
	  m	use "[+]" instead of "[Modified]"
	  n	use "[New]" instead of "[New File]"
	  r	use "[RO]" instead of "[readonly]"
	  w	use "[w]" instead of "written" for file write message.
	  x	use "[dos]" instead of "[dos format]", "[unix]" instead of
		"[unix format]" and "[mac]" instead of "[mac format]".
	  a	all of the above abbreviations

	  o	overwrite message for writing a file with subsequent message
		for reading a file (useful for ":wn" or when 'autowrite' on)
	  O	message for reading a file overwrites any previous message.
		Also for quickfix message (e.g., ":cn").
	  s	don't give "search hit BOTTOM, continuing at TOP" or "search
		hit TOP, continuing at BOTTOM" messages
	  t	truncate file message at the start if it is too long to fit
		on the command-line, "<" will appear in the left most column.
		Ignored in Ex mode.
	  T	truncate other messages in the middle if they are too long to
		fit on the command line. "..." will appear in the middle.
		Ignored in Ex mode.
	  W	don't give "written" or "[w]" when writing a file
	  A	don't give the "ATTENTION" message when an existing swap file
		is found.
	  I	don't give the intro message when starting Vim |:intro|.

	This gives you the opportunity to avoid that a change between buffers
	requires you to hit return, but still gives as useful a message as
	possible for the space available.  To get the whole message that you
	would have got with 'shm' empty, use ":file!"
	Useful values:
	    shm=	No abbreviation of message.
	    shm=a	Abbreviation, but no loss of information.
	    shm=at	Abbreviation, and truncate message when necessary.

	NOTE: This option is set to the Vi default value when 'compatible' is
	set and to the Vim default value when 'compatible' is reset.

				 *'shortname'* *'sn'* *'noshortname'* *'nosn'*
'shortname' 'sn'	boolean	(default off)
			local to buffer
			{not in Vi, not in MS-DOS versions}
	Filenames are assumed to be 8 characters plus one extension of 3
	characters.  Multiple dots in file names are not allowed.  When this
	option is on, dots in file names are replaced with underscores when
	adding an extension (".~" or ".swp").  This option is not available
	for MS-DOS, because then it would always be on.  This option is useful
	when editing files on an MS-DOS compatible filesystem, e.g., messydos
	or crossdos.  When running the Win32 GUI version under Win32s, this
	option is always on by default.

						*'showbreak'* *'sbr'*
'showbreak' 'sbr'	string	(default "")
			global
			{not in Vi}
			{not available when compiled without the  |+linebreak|
			feature}
	String to put at the start of lines that have been wrapped.  Useful
	values are "> " or "+++ ".  Only printable characters are allowed,
	excluding <Tab> and comma (in a future version the comma might be used
	to separate the part that is shown at the end and at the start of a
	line).  The characters are highlighted according to the '@' flag in
	'highlight'.

				     *'showcmd'* *'sc'* *'noshowcmd'* *'nosc'*
'showcmd' 'sc'		boolean	(Vim default: on, off for Unix, Vi default:
				 off)
			global
			{not in Vi}
			{not available when compiled without the
			|+cmdline_info| feature}
	Show (partial) command in status line.  Set this option off if your
	terminal is slow.
	NOTE: This option is set to the Vi default value when 'compatible' is
	set and to the Vim default value when 'compatible' is reset.

			*'showfulltag'* *'sft'* *'noshowfulltag'* *'nosft'*
'showfulltag' 'sft'	boolean (default off)
			global
			{not in Vi}
	When completing a word in insert mode (see |ins-completion|) from the
	tags file, show both the tag name and a tidied-up form of the search
	pattern (if there is one) as possible matches.  Thus, if you have
	matched a C function, you can see a template for what arguments are
	required (coding style permitting).

				 *'showmatch'* *'sm'* *'noshowmatch'* *'nosm'*
'showmatch' 'sm'	boolean	(default off)
			global
	When a bracket is inserted, briefly jump to the matching one.  The
	jump is only done if the match can be seen on the screen.  The time to
	show the match can be set with 'matchtime'.
	A Beep is given if there is no match (no matter if the match can be
	seen or not).  This option is reset when the 'paste' option is set.
	When the 'm' flag is not included in 'cpoptions', typing a character
	will immediately move the cursor back to where it belongs.
	See the "sm" field in 'guicursor' for setting the cursor shape and
	blinking when showing the match.
	Note: For the use of the short form parental guidance is advised.

				 *'showmode'* *'smd'* *'noshowmode'* *'nosmd'*
'showmode' 'smd'	boolean	(Vim default: on, Vi default: off)
			global
	If in Insert, Replace or Visual mode put a message on the last line.
	Use the 'M' flag in 'highlight' to set the type of highlighting for
	this message.
	NOTE: This option is set to the Vi default value when 'compatible' is
	set and to the Vim default value when 'compatible' is reset.

						*'sidescroll'* *'ss'*
'sidescroll' 'ss'	number	(default 0)
			global
			{not in Vi}
	The minimal number of columns to scroll horizontally.  Used only when
	the 'wrap' option is off and the cursor is moved off of the screen.
	When it is zero the cursor will be put in the middle of the screen.
	When using a slow terminal set it to a large number or 0.  When using
	a fast terminal use a small number or 1.  Not used for "zh" and "zl"
	commands.

			*'smartcase'* *'scs'* *'nosmartcase'* *'noscs'*
'smartcase' 'scs'	boolean	(default off)
			global
			{not in Vi}
	Override the 'ignorecase' option if the search pattern contains upper
	case characters.  Only used when the search pattern is typed and
	'ignorecase' option is on.  Used for the commands "/", "?", "n", "N",
	":g" and ":s".  Not used for "*", "#", "gd", tag search, etc..  After
	"*" and "#" you can make 'smartcase' used by doing a "/" command,
	recalling the search pattern from history and hitting return.
	NOTE: This option is reset when 'compatible' is set.

			     *'smartindent'* *'si'* *'nosmartindent'* *'nosi'*
'smartindent' 'si'	boolean	(default off)
			local to buffer
			{not in Vi}
			{not available when compiled without the
			|+smartindent| feature}
	Do smart autoindenting when starting a new line.  Works for C-like
	programs, but can also be used for other languages.  'cindent' does
	something like this, works better in most cases, but is more strict,
	see |C-indenting|.  When 'cindent' is on, setting 'si' has no effect.
	Normally 'autoindent' should also be on when using 'smartindent'.
	An indent is automatically inserted:
	- After a line ending in '{'.
	- After a line starting with a keyword from 'cinwords'.
	- Before a line starting with '}' (only with the "O" command).
	When typing '}' as the first character in a new line, that line is
	given the same indent as the matching '{'.
	When typing '#' as the first character in a new line, the indent for
	that line is removed, the '#' is put in the first column.  The indent
	is restored for the next line.  If you don't want this, use this
	mapping: ":inoremap # X^H#", where ^H is entered with CTRL-V CTRL-H.
	When using the ">>" command, lines starting with '#' are not shifted
	right.
	NOTE: 'smartindent' is reset when 'compatible' or 'paste' is set.

				 *'smarttab'* *'sta'* *'nosmarttab'* *'nosta'*
'smarttab' 'sta'	boolean	(default off)
			global
			{not in Vi}
	When on, a <Tab> in front of a line inserts blanks according to
	'shiftwidth'.  'tabstop' is used in other places.
	When off a <Tab> always inserts blanks according to 'tabstop'.
	'shiftwidth' is only used for shifting text left or right
	|shift-left-right|.
	What gets inserted (a Tab or spaces) depends on the 'expandtab'
	option.  Also see |ins-expandtab|.  When 'expandtab' is not set, the
	number of spaces minimized by using <Tab>s.
	NOTE: This option is reset when 'compatible' is set.

					*'softtabstop'* *'sts'*
'softtabstop' 'sts'	number	(default 0)
			local to buffer
			{not in Vi}
	Number of spaces that a <Tab> counts for while performing editing
	operations, like inserting a <Tab> or using <BS>.  It "feels" like
	<Tab>s are being inserted, while in fact a mix of spaces and <Tab>s is
	used.  This is useful to keep the 'ts' setting at its standard value
	of 8, while being able to edit like it is set to 'sts'.  However,
	commands like "x" still work on the actual characters.
	When 'sts' is zero, this feature is off.
	'softtabstop' is set to 0 when the 'paste' option is set.
	See also |ins-expandtab|.  When 'expandtab' is not set, the number of
	spaces minimized by using <Tab>s.
	NOTE: This option is set to 0 when 'compatible' is set.

			*'splitbelow'* *'sb'* *'nosplitbelow'* *'nosb'*
'splitbelow' 'sb'	boolean	(default off)
			global
			{not in Vi}
	When on, splitting a window will put the new window below the current
	one.

			   *'startofline'* *'sol'* *'nostartofline'* *'nosol'*
'startofline' 'sol'	boolean	(default on)
			global
			{not in Vi}
	When on the commands listed below move the cursor to the first
	blank of the line.  When off the cursor is kept in the same column
	(if possible).  This applies to the commands: CTRL-D, CTRL-U, CTRL-B,
	CTRL-F, "G", "H", "M", "L", , and to the commands "d", "<<" and ">>"
	with a linewise operator, with "%" with a count and to buffer changing
	commands (CTRL-^, :bnext, :bNext, etc.).  Also for an Ex command that
	only has a line number, e.g., ":25" or ":+".
	In case of buffer changing commands the cursor is placed at the column
	where it was the last time the buffer was edited.
	NOTE: This option is set when 'compatible' is set.

			   *'statusline'* *'stl'*
'statusline' 'stl'	string	(default empty)
			global
			{not in Vi}
			{not available when compiled without the |+statusline|
			feature}
	When nonempty, this option determines the content of the status line.
	Also see |status-line|.

	The option consists of printf style '%' items interspersed with
	normal text.  Each status line item is of the form:
	  %-0{minwid}.{maxwid}{item}
	All fields except the {item} is optional.  A single percent sign can
	be given as "%%".

	Note that the only effect of 'ruler' when this option is set (and
	'laststatus' is 2) is controlling the output of |CTRL-G|.

	field	    meaning ~
	-	    Left justify the item. The default is right justified
		    when minwid is larger than the length of the item.
	0	    Leading zeroes in numeric items. Overridden by '-'.
	minwid	    Minimum width of the item, padding as set by '-' & '0'.
	maxwid	    Maximum width of the item.  Truncation occurs with a '<'
		    on the left for text items.  Numeric items will be
		    shifted down to maxwid-2 digits followed by '>'number
		    where number is the amount of missing digits, much like
		    an exponential notation.
	item	    A one letter code as described below.

	Following is a description of the possible statusline items.  The
	second character in "item" is the type: N for number, S for string
	and F for flags as described below.  A - is used if not applicable.

	item  meaning ~
	f S   Path to the file in the buffer, relative to current directory.
	F S   Full path to the file in the buffer.
	t S   File name (tail) of file in the buffer.
	m F   Modified flag, text is " [+].
	M F   Modified flag, text is ",+".
	r F   Readonly flag, text is " [RO]".
	R F   Readonly flag, text is ",RO".
	h F   Help buffer flag, text is " [help]".
	H F   Help buffer flag, text is ",HLP".
	w F   Preview window flag, text is " [Preview]".
	W F   Preview window flag, text is ",PRV".
	y F   Type of file in the buffer, e.g., " [vim]".  See 'filetype'.
	Y F   Type of file in the buffer, e.g., ",VIM".  See 'filetype'.
	      {not available when compiled without |+autocmd| feature}
	n N   Buffer number.
	b N   Value of byte under cursor.
	B N   As above, in hexadecimal.
	o N   Byte number in file of byte under cursor, first byte is 1.
	      Mnemonic: Offset from start of file (with one added)
	      {not available when compiled without |+byte_offset| feature}
	O N   As above, in hexadecimal.
	l N   Line number.
	L N   Number of lines in buffer.
	c N   Column number.
	v N   Virtual column number.
	V N   Virtual column number as -{num}.  Not displayed if equal to 'c'.
	p N   Percentage through file in lines as in |CTRL-G|.
	P S   Percentage through file of displayed window.  This is like the
	      percentage described for 'ruler'.  Always 3 in length.
	a S   Argument list status as in default title. ({current} of {max})
	      Empty if the argument file count is zero or one.
	{ NF  Evaluate expression between '{' and '}' and substitute result.
	( -   Start of item group.  Can be used for setting the width and
	      alignment of a section.  Must be followed by %) somewhere.
	) -   End of item group.  No width fields allowed.
	< -   Where to truncate line if too long.  Default is at the start.
	      No width fields allowed.
	= -   Separation point between left and right aligned items.
	      No width fields allowed.
	* -   Set highlight group to User{N}, where {N} is taken from the
	      minwid field. eg. %1*.  Restore normal highlight with %* or %0*.
	      The difference between User{N} and StatusLine  will be applied
	      to StatusLineNC for the statusline of non-current windows.
	      The number N must be between 1 and 9.  See |hl-User1..9|

	Display of flags are controlled by the following heuristic:
	If a flag text starts with comma it is assumed that it wants to
	separate itself from anything but preceding plaintext.  If it starts
	with a space it is assumed that it wants to separate itself from
	anything but other flags.  That is: A leading comma is removed if the
	preceding character stems from plaintext.  A leading space is removed
	if the preceding character stems from another active flag. This will
	make a nice display when flags are used like in the examples below.

	When all items in a group becomes an empty string (ie. flags that are
	not set) and a minwid is not set for the group, the whole group will
	become empty.  This will make a group like the following disappear
	completely from the statusline when none of the flags are set.
>	set statusline=...%(\ [%M%R%H]%)...

	Beware that an expression is evaluated each and every time the status
	line is displayed.  The current buffer and current window will be set
	temporarily to that of the window (and buffer) whose statusline is
	currently being drawn. The expression will evaluate in this context.
	The variable "actual_curbuf" is set to the 'bufnr()' number of the
	real current buffer.

	A result of all digits is regarded a number for display purposes.
	Otherwise the result is taken as flag text and applied to the rules
	described above.

	Watch out for errors in expressions.  They may render Vim unusable !
	If you are stuck, hold down ':' or 'Q' to get a prompt, then quit and
	edit your .vimrc or whatever with "vim -u NONE" to get it right.

	Examples:
	Display byte count and byte value, modified flag in red.
>	  set statusline=%<%f%=\ [%1*%M%*%n%R%H]\ %-19(%3l,%02c%03V%)%O'%02b'
>	  hi User1 term=inverse,bold cterm=inverse,bold ctermfg=red
	Emulate standard status line with 'ruler' set
>	  set statusline=%<%f%h%m%r%=%l,%c%V\ %P
	Idem, but add ascii value of char under the cursor (like "ga")
>	  set statusline=%<%f%h%m%r%=%b\ 0x%B\ \ %l,%c%V\ %P
	Display a ,GZ flag if a compressed file is loaded
>	  set statusline=...%r%{VarExists('b:gzflag','\ [GZ]')}%h...
	  In the |:autocmd|'s:   |let b:gzflag = 1   And: |unlet b:gzflag
>	  function VarExists(var, val)
>	      if exists(a:var) | return a:val | else | return '' | endif
>	  endfunction

						*'suffixes'* *'su'*
'suffixes' 'su'		string	(default ".bak,~,.o,.h,.info,.swp,.obj")
			global
			{not in Vi}
	Files with these suffixes get a lower priority when multiple files
	match a wildcard.  See |suffixes|.  Commas can be used to separate the
	suffixes.  Spaces after the comma are ignored.  A dot is also seen as
	the start of a suffix.  To avoid a dot or comma being recognized as a
	separator, precede it with a backslash (see |option-backslash| about
	including spaces and backslashes).
	See 'wildignore' for completely ignoring files.
	The use of |:set+=| and |:set-=| is preferred when adding or removing
	suffixes from the list.  This avoids problems when a future version
	uses another default.

				*'swapfile'* *'swf'* *'noswapfile'* *'noswf'*
'swapfile' 'swf'	boolean (default on)
			local to buffer
			{not in Vi}
	Use a swapfile for the buffer.  This option can be reset when a
	swapfile is not wanted for a specific buffer.  For example, with
	confidential information that even root must not be able to access.
	Careful: All text will be in memory.  Don't use this for big files.
	Recovery will be impossible!
	A swapfile will only be present when |'updatecount'| is non-zero and
	'swapfile' is set.
	When 'swapfile' is reset, the swap file for the current buffer is
	immediately deleted.  When 'swapfile' is set, and 'updatecount' is
	non-zero, a swap file is immediately created.
	Also see |swap-file| and |'swapsync'|.

						*'swapsync'* *'sws'*
'swapsync' 'sws'	string	(default "fsync")
			global
			{not in Vi}
	When this option is not empty a swap file is synced to disk after
	writing to it.  This takes some time, especially on busy unix systems.
	When this option is empty parts of the swap file may be in memory and
	not written to disk.  When the system crashes you may lose more work.
	On Unix the system does a sync now and then without Vim asking for it,
	so the disadvantage of setting this option off is small.  On some
	systems the swap file will not be written at all.  For a unix system
	setting it to "sync" will use the sync() call instead of the default
	fsync(), which may work better on some systems.

						*'switchbuf'* *'swb'*
'switchbuf' 'swb'	string	(default "")
			global
			{not in Vi}
	This option controls the behavior when switching between buffers.
	Possible values (comma separated list):
	   useopen	If included, jump to the first open window that
			contains the specified buffer (if there is one).
			Otherwise: Do not examine other windows.
			This setting is checked in |quickfix| mode when
			jumping to errors (":cc", ":cn", "cp", etc.).  It
			is also used in all buffer related split commands,
			for example ":sbuffer", ":sbnext", or ":sbrewind".
	   split	If included, split the current window before loading
			a buffer. Otherwise: do not split, use current window.
			Supported in |quickfix| commands that display errors.

						*'syntax'* *'syn'*
'syntax' 'syn'		string  (default emtpy)
			local to buffer
			{not in Vi}
			{not available when compiled without the |+syntax|
			feature}
	When this option is set, the syntax with this name is loaded, unless
	syntax highlighting has been switched off with ":syntax off".
	Otherwise this option does not always reflect the current syntax (the
	b:current_syntax variable does).
	This option is most useful in a modeline, for a file which syntax is
	not automatically recognized.  Example, for in an IDL file:
>		/* vim: set syntax=idl : */
	To switch off syntax highlighting for the current file, use:
>		:set syntax=OFF
	To switch syntax highlighting on according to the current value of the
	'filetype' option:
>		:set syntax=ON
	What actually happens when setting the 'syntax' option is that the
	Syntax autocommand event is triggered with the value as argument.
	This option is not copied to another buffer, independent of the 's' or
	'S' flag in 'cpoptions'.

					*'tabstop'* *'ts'*
'tabstop' 'ts'		number	(default 8)
			local to buffer
	Number of spaces that a <Tab> in the file counts for.  Also see
	|:retab| command, and 'softtabstop' option.

	Note: Setting 'tabstop' to any other value than 8 can make your file
	appear wrong in many places (e.g., when printing it).

	There are four main ways to use tabs in Vim:
	1. Always keep 'tabstop' at 8, set 'softtabstop' and 'shiftwidth' to 4
	   (or 3 or whatever you prefer) and use 'noexpandtab'.  Then Vim
	   will use a mix of tabs and spaces, but typing Tab and BS will
	   behave like a tab appears every 4 (or 3) characters.
	2. Set 'tabstop' and 'shiftwidth' to whatever you prefer and use
	   'expandtab'.  This way you will always insert spaces.  The
	   formatting will never be messed up when 'tabstop' is changed.
	3. Set 'tabstop' and 'shiftwidth' to whatever you prefer and use a
	   |modeline| to set these values when editing the file again.  Only
	   works when using Vim to edit the file.
	4. Always set 'tabstop' and 'shiftwidth' to the same value, and
	   'noexpandtab'.  This should then work (for initial indents only)
	   for any tabstop setting that people use.  It might be nice to have
	   tabs after the first non-blank inserted as spaces if you do this
	   though.  Otherwise aligned comments will be wrong when 'tabstop' is
	   changed.

			*'tagbsearch'* *'tbs'* *'notagbsearch'* *'notbs'*
'tagbsearch' 'tbs'	boolean	(default on)
			global
			{not in Vi}
	When searching for a tag (e.g., for the |:ta| command), Vim can either
	use a binary search or a linear search in a tags file.  Binary
	searching makes searching for a tag a LOT faster, but a linear search
	will find more tags if the tags file wasn't properly sorted.
	Vim normally assumes that your tags files are sorted, or indicate that
	they are not sorted.  Only when this is not the case does the
	'tagbsearch' option need to be switched off.

	When 'tagbsearch' is on, binary searching is first used in the tags
	files.  In certain situations, Vim will do a linear search instead for
	certain files, or retry all files with a linear search.  When
	'tagbsearch' is off, only a linear search is done.

	Linear searching is done anyway, for one file, when Vim finds a line
	at the start of the file indicating that it's not sorted:
>  !_TAG_FILE_SORTED	0	/some command/
	[The whitespace before and after the '0' must be a single <Tab>]

	When a binary search was done and no match was found in any of the
	files listed in 'tags', and 'ignorecase' is set or a pattern is used
	instead of a normal tag name, a retry is done with a linear search.
	Tags in unsorted tags files, and matches with different case will only
	be found in the retry.

	When 'tagbsearch' is off, tags searching is slower when a full match
	exists, but faster when no full match exists.  Tags in unsorted tags
	files may only be found with 'tagbsearch' off.
	When the tags file is not sorted, or sorted in a wrong way (not on
	ASCII byte value), 'tagbsearch' should be off, or the line given above
	must be included in the tags file.
	This option doesn't affect commands that find all matching tags (e.g.,
	command-line completion and ":help").
	{Vi: always uses binary search in some versions}

						*'taglength'* *'tl'*
'taglength' 'tl'	number	(default 0)
			global
	If non-zero, tags are significant up to this number of characters.

			*'tagrelative'* *'tr'* *'notagrelative'* *'notr'*
'tagrelative' 'tr'	boolean	(Vim default: on, Vi default: off)
			global
			{not in Vi}
	If on and using a tag file in another directory, file names in that
	tag file are relative to the directory where the tag file is.
	NOTE: This option is set to the Vi default value when 'compatible' is
	set and to the Vim default value when 'compatible' is reset.

						*'tags'* *'tag'*
'tags' 'tag'		string	(default "./tags,tags", when compiled with
				|+emacs_tags|: "./tags,./TAGS,tags,TAGS")
			global
	Filenames for the tag command, separated by spaces or commas.  To
	include a space or comma in a file name, precede it with a backslash
	(see |option-backslash| about including spaces and backslashes).
	When a file name starts with "./", the '.' is replaced with the path
	of the current file.  But only when the 'd' flag is not included in
	'cpoptions'.  Environment variables are expanded |:set_env|.  Also see
	|tags-option|.
	If Vim was compiled with the |+emacs_tags| feature, Emacs-style tag
	files are also supported.  They are automatically recognized.  The
	default value becomes "./tags,./TAGS,tags,TAGS".  |emacs-tags|
	The use of |:set+=| and |:set-=| is preferred when adding or removing
	file names from the list.  This avoids problems when a future version
	uses another default.
	{Vi: default is "tags /usr/lib/tags"}

				*'tagstack'* *'tgst'* *'notagstack'* *'notgst'*
'tagstack' 'tgst'	boolean	(default on)
			global
			{not in all versions of Vi}
	When on, the |tagstack| is used normally.  When off, a ":tag" or
	":tselect" command with an argument will not push the tag onto the
	tagstack.  A following ":tag" without an argument, a ":pop" command or
	any other command that uses the tagstack will use the unmodified
	tagstack, but does change the pointer to the active entry.
	Resetting this option is useful when using a ":tag" command in a
	mapping which should not change the tagstack.

						*'term'*
'term'			string	(default is $TERM, if that fails:
				      in the GUI: "builtin_gui"
					on Amiga: "amiga"
					 on BeOS: "beos-ansi"
					  on Mac: "mac-ansi"
					 on MiNT: "vt52"
				       on MS-DOS: "pcterm"
					 on OS/2: "os2ansi"
					 on Unix: "ansi"
					  on VMS: "ansi"
				       on Win 32: "win32")
			global
	Name of the terminal.  Used for choosing the terminal control
	characters.  Environment variables are expanded |:set_env|.
	For example:
>		:set term=$TERM
	See |termcap|.

						*'terse'* *'noterse'*
'terse'			boolean	(default off)
			global
	When set: Add 's' flag to 'shortmess' option (this makes the message
	for a search that hits the start or end of the file not being
	displayed).  When reset: Remove 's' flag from 'shortmess' option.  {Vi
	shortens a lot of messages}

				   *'textauto'* *'ta'* *'notextauto'* *'nota'*
'textauto' 'ta'		boolean	(Vim default: on, Vi default: off)
			global
			{not in Vi}
	This option is obsolete.  Use 'fileformats'.
	For backwards compatibility, when 'textauto' is set, 'fileformats' is
	set to the default value for the current system.  When 'textauto' is
	reset, 'fileformats' is made empty.
	NOTE: This option is set to the Vi default value when 'compatible' is
	set and to the Vim default value when 'compatible' is reset.

				   *'textmode'* *'tx'* *'notextmode'* *'notx'*
'textmode' 'tx'		boolean	(MS-DOS, Win32 and OS/2: default on,
				 others: default off)
			local to buffer
			{not in Vi}
	This option is obsolete.  Use 'fileformat'.
	For backwards compatibility, when 'textmode' is set, 'fileformat' is
	set to "dos".  When 'textmode' is reset, 'fileformat' is set to
	"unix".

						*'textwidth'* *'tw'*
'textwidth' 'tw'	number	(default 0)
			local to buffer
			{not in Vi}
	Maximum width of text that is being inserted.  A longer line will be
	broken after white space to get this width.  A zero value disables
	this.  'textwidth' is set to 0 when the 'paste' option is set.  When
	'textwidth' is zero, 'wrapmargin' may be used.  See also
	'formatoptions' and |ins-textwidth|.
	NOTE: This option is set to 0 when 'compatible' is set.

			     *'tildeop'* *'top'* *'notildeop'* *'notop'*
'tildeop' 'top'		boolean	(default off)
			global
			{not in Vi}
	When on: The tilde command "~" behaves like an operator.
	NOTE: This option is reset when 'compatible' is set.

				*'timeout'* *'to'* *'notimeout'* *'noto'*
'timeout' 'to'		boolean (default on)
			global
						*'ttimeout'* *'nottimeout'*
'ttimeout'		boolean (default off)
			global
			{not in Vi}
	These two options together determine the behavior when part of a
	mapped key sequence or keyboard code has been received:

	timeout		ttimeout	action	~
	off		off		no time out
	on		on or off	time out on :mappings and key codes
	off		on		time out on key codes

	If there is no time out, Vim will wait until either the complete
	mapping or key sequence has been received, or it is clear that there
	is no mapping or key sequence for the received characters.  For
	example: if you have mapped "vl" and Vim has received 'v', the next
	character is needed to see if the 'v' is followed by an 'l'.  With a
	time out Vim will wait for about 1 second for the next character to
	arrive.  After that the already received characters are interpreted
	as single characters.  The waiting time can be changed with the
	'timeoutlen' option.
	On slow terminals or very busy systems time out may cause
	malfunctioning cursor keys.  If both options are off, Vim waits
	forever after an entered <Esc> if there are key codes that start
	with <Esc>.  You will have to type <Esc> twice.  If you do not have
	problems with key codes, but would like to have :mapped key
	sequences not time out in 1 second, set the ttimeout option and
	reset the timeout option.

	NOTE: 'ttimeout' is reset when 'compatible' is set.

						*'timeoutlen'* *'tm'*
'timeoutlen' 'tm'	number	(default 1000)
			global
			{not in all versions of Vi}
						*'ttimeoutlen'* *'ttm'*
'ttimeoutlen' 'ttm'	number	(default -1)
			global
			{not in Vi}
	The time in milliseconds that is waited for a key code or mapped key
	sequence to complete.  Normally only 'timeoutlen' is used and
	'ttimeoutlen' is -1.  When a different timeout value for key codes is
	desired set 'ttimeoutlen' to a non-negative number.

		ttimeoutlen	mapping delay	   key code delay	~
		   < 0		'timeoutlen'	   'timeoutlen'
		  >= 0		'timeoutlen'	   'ttimeoutlen'

	The timeout only happens when the 'timeout' and 'ttimeout' options
	tell so.  A useful setting would be
		:set timeout timeoutlen=3000 ttimeoutlen=100
	(time out on mapping after three seconds, time out on key codes after
	a tenth of a second).

						*'title'* *'notitle'*
'title'			boolean	(default off, on when title can be restored)
			global
			{not in Vi}
			{not available when compiled without the |+title|
			feature}
	When on, the title of the window will be set to the value of
	'titlestring' (if it is not empty), or to "VIM - filename", where
	filename is the name of the file currently being edited.  Only works
	if the terminal supports setting window titles
	(currently Amiga console, Win32 console, all GUI versions and
	terminals with a non- empty 't_ts' option - these are Unix xterm and
	iris-ansi by default, where 't_ts' is taken from the builtin termcap).
								*X11*
	When Vim was compiled with HAVE_X11 defined, the original title will
	be restored if possible.  The output of ":version" will include "+X11"
	when HAVE_X11 was defined, otherwise it will be "-X11".  This also
	works for the icon name |'icon'|.
	If the title cannot be restored, it is set to the value of 'titleold'.
	You might want to restore the title outside of Vim then.
	When using an xterm from a remote machine you can use this command:
	    rsh machine_name xterm -display $DISPLAY &
	then the WINDOWID environment variable should be inherited and the
	title of the window should change back to what it should be after
	exiting Vim.

								*'titlelen'*
'titlelen'		number	(default 85)
			global
			{not in Vi}
			{not available when compiled without the |+title|
			feature}
	Gives the percentage of 'columns' to use for the length of the window
	title.  When the title is longer, only the end of the path name is
	shown.  A '<' character before the path name is used to indicate this.
	Using a percentage makes this adapt to the width of the window.  But
	it won't work perfectly, because the actual number of characters
	available also depends on the font used and other things in the title
	bar.  When 'titlelen' is zero the full path is used.  Otherwise,
	values from 1 to 30000 percent can be used.
	'titlelen' is also used for the 'titlestring' option.

                                                *'titleold'*
'titleold'              string	(default "Thanks for flying Vim")
			global
			{not in Vi}
			{only available when compiled with the |+title|
			feature}
	This option will be used for the window title when exiting Vim if the
	original title cannot be restored.  Only happens if 'title' is on or
	'titlestring' is not empty.
						*'titlestring'*
'titlestring'		string	(default "")
			global
			{not in Vi}
			{not available when compiled without the |+title|
			feature}
	When this option is not empty, it will be used for the title of the
	window.  This happens only when the 'title' option is on.
	Only works if the terminal supports setting window titles (currently
	Amiga console, Win32 console, all GUI versions and terminals with a
	non-empty 't_ts' option).
	When Vim was compiled with HAVE_X11 defined, the original title will
	be restored if possible |X11|.
	When this option contains printf-style '%' items, they will be
	expanded according to the rules used for 'statusline'.
	Example:
>   auto BufEnter * let &titlestring = hostname() . "/" . expand("%:p")
>   set title titlestring=%<%F%=%l/%L-%P titlelen=70
	The value of 'titlelen' is used to align items in the middle or right
	of the available space.
	Some people prefer to have the file name first:
>   set titlestring=%t%(\ %M%)%(\ (%{expand(\"%:~:.:h\")})%)%(\ %a%)
	Note the use of "%{ }" and an expression to get the path of the file,
	without the file name.  The "%( %)" constructs are used to add a
	separating space only when needed.
	NOTE: Use of special characters in 'titlestring' may cause the display
	to be garbled (e.g., when it contains a CR or NL character).
	{not available when compiled without the |+statusline| feature}

				*'toolbar'* *'tb'*
'toolbar' 'tb'		string	(default "icons,tooltips")
			global
			{only for |+GUI_GTK|}
	The contents of this option controls various toolbar settings.  The
	possible values are:
		icons		Toolbar buttons are shown with icons.
		text		Toolbar buttons shown with text.
		tooltips	Tooltips are active for toolbar buttons.
	Tooltips refer to the popup help text which appears after the mouse
	cursor is placed over a toolbar button for a brief moment.

	If you want the toolbar to be shown with icons as well as text, do the
	following:
>		:set tb=icons,text
	If none of the strings specified in 'toolbar' are valid of if
	'toolbar' is empty, this option is ignored.  If you want to disable
	the toolbar, you need to set the 'guioptions' option.  For example:
>		:set guioptions-=T
	Also see |gui-toolbar|.

			     *'ttybuiltin'* *'tbi'* *'nottybuiltin'* *'notbi'*
'ttybuiltin' 'tbi'	boolean	(default on)
			global
			{not in Vi}
	When on, the builtin termcaps are searched before the external ones.
	When off the builtin termcaps are searched after the external ones.
	When this option is changed, you should set the 'term' option next for
	the change to take effect, for example:
>		:set notbi term=$TERM
	See also |termcap|.
	Rationale: The default for this option is "on", because the builtin
	termcap entries are generally better (many systems contain faulty
	xterm entries...).

				     *'ttyfast'* *'tf'* *'nottyfast'* *'notf'*
'ttyfast' 'tf'		boolean	(default off, on when 'term' is xterm, hpterm,
					sun-cmd, screen, rxvt, dtterm or
					iris-ansi; also on when running Vim in
					a DOS console)
			global
			{not in Vi}
	Indicates a fast terminal connection.  More characters will be sent to
	the screen for redrawing, instead of using insert/delete line
	commands.  Improves smoothness of redrawing when there are multiple
	windows and the terminal does not support a scrolling region.
	Also enables the extra writing of characters at the end of each screen
	line for lines that wrap.  This helps when using copy/paste with the
	mouse in an xterm and other terminals.

						*'ttymouse'* *'ttym'*
'ttymouse' 'ttym'	string	(default depends on 'term')
			global
			{not in Vi}
			{only in Unix, and not in the GUI}
	Name of the terminal type for which mouse codes are to be recognized.
	Currently these three strings are valid:
							*xterm-mouse*
	   xterm	xterm-like mouse handling.  The mouse generates
			"<Esc>[Mscr", where "scr" is three bytes:
				"s"  = button state
				"c"  = column plus 33
				"r"  = row plus 33
	   xterm2	Works like "xterm", but with the xterm reporting the
			mouse position while the mouse is dragged.  This works
			much faster and more precise.  Your xterm must at
			least at patchlevel 88  / XFree 3.3.3 for this to
			work.  Determine your version with "xterm -version".
							*netterm-mouse*
	   netterm	NetTerm mouse handling.  The mouse generates
			"<Esc>}r,c<CR>", where "r,c" are two decimal numbers
			for the row and column.
							*dec-mouse*
	   dec		DEC terminal mouse handling.  The mouse generates a
			rather complex sequence, starting with "<Esc>[".

	The mouse handling must be enabled at compile time |+mouse_xterm|
	|+mouse_dec| |+mouse_netterm|.
	Only "xterm"(2) is really recognized.  NetTerm mouse codes are always
	recognized, if enabled at compile time.  DEC terminal mouse codes
	are recognized if enabled at compile time, and 'ttymouse' is not
	"xterm".
	This option is automatically set to "xterm", when the 'term' option is
	set to a name that starts with "xterm", and 'ttymouse' is not "xterm"
	or "xterm2" already.  The main use of this option is to set it to
	"xterm", when the terminal name doesn't start with "xterm", but it can
	handle xterm mouse codes.
	The "xterm2" value will be set if the xterm version is reported to be
	95 of higher.  This only works if the t_RV is set to the escape
	sequence to request the xterm version number.  Otherwise "xterm2" must
	be set explicitly.

						*'ttyscroll'* *'tsl'*
'ttyscroll' 'tsl'	number	(default 999)
			global
	Maximum number of lines to scroll the screen.  If there are more lines
	to scroll the window is redrawn.  For terminals where scrolling is
	very slow and redrawing is not slow this can be set to a small number,
	e.g., 3, to speed up displaying.

						*'ttytype'* *'tty'*
'ttytype'	'tty'		string	(default from $TERM)
			global
	Alias for 'term', see above.

						*'undolevels'* *'ul'*
'undolevels' 'ul'		number	(default 100, 1000 for Unix, VMS,
						Win32 and OS/2)
			global
			{not in Vi}
	Maximum number of changes that can be undone.  Since undo information
	is kept in memory, higher numbers will cause more more memory to be
	used (nevertheless, a single change can use an unlimited amount of
	memory).
	Set to 0 for Vi compatibility: One level of undo and "u" undoes
	itself:
>		set ul=0
	But you can also get Vi compatibility by including the 'u' flag in
	'cpoptions', and still be able to use CTRL-R to repeat undo.
	Set to a negative number for no undo at all:
>		set ul=-1
	This helps when you run out of memory for a single change.
	Also see |undo-two-ways|.

						*'updatecount'* *'uc'*
'updatecount' 'uc'	number	(default: 200)
			global
			{not in Vi}
	After typing this many characters the swap file will be written to
	disk.  When zero, no swap file will be created at all (see chapter on
	recovery |crash-recovery|).  'updatecount' is set to zero by starting
	Vim with the "-n" option, see |startup|.  When editing in readonly
	mode this option will be initialized to 10000.
	The swapfile can be disabled per buffer with |'swapfile'|.
	When 'updatecount' is set from non-zero to zero, swap files are
	created for all buffers that have 'swapfile' set.  When 'updatecount'
	is set to zero, existing swap files are not deleted.
	Also see |'swapsync'|.

						*'updatetime'* *'ut'*
'updatetime' 'ut'	number	(default 4000)
			global
			{not in Vi}
	If this many milliseconds nothing is typed the swap file will be
	written to disk (see |crash-recovery|).  Also used for the
	|CursorHold| autocommand event.

						*'verbose'* *'vbs'*
'verbose' 'vbs'		number	(default 0)
			global
			{not in Vi}
	When bigger than zero, Vim will give messages about what it is doing.
	Currently, these messages are given:
	>= 1	When a file is ":source"'ed.
	>= 1	When the viminfo file is read or written.
	>= 8	Files for which a group of autocommands is executed.
	>= 9	Every executed autocommand.
	>=15	Every executed function line.

	This option can also be set with the "-V" argument.  See |-V|.

						*'viminfo'* *'vi'*

'viminfo' 'vi'		string	(default "")
			global
			{not in Vi}
			{not available when compiled without the  |+viminfo|
			feature}
	When non-empty, the viminfo file is read upon startup and written
	when exiting Vim (see |viminfo-file|).  The string should be a comma
	separated list of parameters, each consisting of a single character
	identifying the particular parameter, followed by a number or string
	which specifies the value of that parameter.  If a particular
	character is left out, then the default value is used for that
	parameter.  The following is a list of the identifying characters and
	the effect of their value.
	CHAR	VALUE	~
	'	Maximum number of previously edited files for which the marks
		are remembered.  This parameter must always be included when
		'viminfo' is non-empty.
	f	Whether file marks need to be stored.  If zero, file marks ('0
		to '9, 'A to 'Z) are not stored.  When not present or when
		non-zero, they are all stored.  '0 is used for the current
		cursor position (when exiting or when doing ":wviminfo").
	r	Removable media.  The argument is a string (up to the next
		',').  This parameter can be given several times.  Each
		specifies the start of a path for which no marks will be
		stored.  This is to avoid removable media.  For MS-DOS you
		could use "ra:,rb:", for Amiga "rdf0:,rdf1:,rdf2:".  Case is
		ignored.  Maximum length of each 'r' argument is 50
		characters.
	"	Maximum number of lines saved for each register.  If zero then
		registers are not saved.  When not included, all lines are
		saved.  Dont forget to put a backslash before the ", otherwise
		it will be recognized as the start of a comment!
	:	Maximum number of items in the command-line history to be
		saved.  When not included, the value of 'history' is used.
	/	Maximum number of items in the search pattern history to be
		saved.  If non-zero, then the previous search and substitute
		patterns are also saved.  When not included, the value of
		'history' is used.
	h	Disable the effect of 'hlsearch' when loading the viminfo
		file.  When not included, it depends on whether ":nohlsearch"
		has been used since the last search command.
	@	Maximum number of items in the input-line history to be
		saved.  When not included, the value of 'history' is used.
	n	Name of the viminfo file.  The name must immediately follow
		the 'n'.  Must be the last one!  If the "-i" argument was
		given when starting Vim, that file name overrides the one
		given here with 'viminfo'.  Environment variables are expanded
		when opening the file, not when setting the option.
	%	When included, save and restore the buffer list.  If Vim is
		started with a file name argument, the buffer list is not
		restored.  If Vim is started without a file name argument, the
		buffer list is restored from the viminfo file.  Buffers
		without a file name and buffers for help files are not written
		to the viminfo file.
	!	When included, save and restore global variables that start
		with an uppercase letter, and don't contain a lowercase
		letter.

	Example:
>	    :set viminfo='50,\"1000,:0,n~/vim/viminfo

	'50		Marks will be remembered for the last 50 files you
			edited.
	"1000		Contents of registers (up to 1000 lines each) will be
			remembered.
	:0		Command-line history will not be saved.
	n~/vim/viminfo	The name of the file to use is "~/vim/viminfo".
	no /		Since '/' is not specified, the default will be used,
			that is, save all of the search history, and also the
			previous search and substitute patterns.
	no %		The buffer list will not be saved nor read back.
	no h		'hlsearch' highlighting will be restored.

			*'visualbell'* *'vb'* *'novisualbell'* *'novb'* *beep*
'visualbell' 'vb'	boolean	(default off)
			global
			{not in Vi}
	Use visual bell instead of beeping.  The terminal code to display the
	visual bell is given with 't_vb'.  When no beep or flash is wanted,
	use ":set vb t_vb=".
	Note: When the GUI starts, 't_vb' is reset to its default value.  You
	might want to set it again in your |gvimrc|.
	In the GUI, 't_vb' defaults to "<Esc>|f", which inverts the display
	for 20 msec.  If you want to use a different time, use "<Esc>|40f",
	where 40 is the time in msec.
	Does not work on the Amiga, you always get a screen flash.
	Also see 'errorbells'.

						*'warn'* *'nowarn'*
'warn'			boolean	(default on)
			global
	Give a warning message when a shell command is used while the buffer
	has been changed.

		     *'weirdinvert'* *'wiv'* *'noweirdinvert'* *'nowiv'*
'weirdinvert' 'wiv'	boolean	(default off)
			global
			{not in Vi}
	This option has the same effect as the 't_xs' termcap option.
	It is provided for backwards compatibility with version 4.x.
	Setting 'weirdinvert' has the effect of making 't_xs' non-empty, and
	vice versa.  Has no effect when the GUI is running.

						*'whichwrap'* *'ww'*
'whichwrap' 'ww'	string	(Vim default: "b,s", Vi default: "")
			global
			{not in Vi}
	Allow specified keys that move the cursor left/right to wrap to the
	previous/next line when the cursor is on the first/last character in
	the line.  Concatenate characters to allow this for these keys:
		char   key	  mode	~
		 b    <BS>	 Normal and Visual
		 s    <Space>	 Normal and Visual
		 h    "h"	 Normal and Visual
		 l    "l"	 Normal and Visual
		 <    <Left>	 Normal and Visual
		 >    <Right>	 Normal and Visual
		 ~    "~"	 Normal
		 [    <Left>	 Insert and Replace
		 ]    <Right>	 Insert and Replace
	For example:
>		:set ww=<,>,[,]
	allows wrap only when cursor keys are used.
	When the movement keys are used in combination with a delete or change
	operator, the <EOL> also counts for a character.  This makes "3h"
	different from "3dh" when the cursor crosses the end of a line.  This
	is also true for "x" and "X", because they do the same as "dl" and
	"dh".  If you use this, you may also want to use the mapping
	":map <BS> X" to make backspace delete the character in front of the
	cursor.
	When 'l' is included, you get a side effect: "yl" on an empty line
	will include the <EOL>, so that "p" will insert a new line.
	NOTE: This option is set to the Vi default value when 'compatible' is
	set and to the Vim default value when 'compatible' is reset.

						*'wildchar'* *'wc'*
'wildchar' 'wc'		number	(Vim default: <Tab>, Vi default: CTRL-E)
			global
			{not in Vi}
	Character you have to type to start wildcard expansion in the
	command-line, as specified with 'wildmode'.
	The character is not recognized when used inside a macro.  See
	'wildcharm' for that.
	Although 'wc' is a number option, you can set it to a special key:
>		:set wc=<Esc>
	NOTE: This option is set to the Vi default value when 'compatible' is
	set and to the Vim default value when 'compatible' is reset.

						*'wildcharm'* *'wcm'*
'wildcharm' 'wcm'	number	(default: none (0))
			global
			{not in Vi}
	'wildcharm' works exactly like 'wildchar', except that it is
	recognized when used inside a macro. You can find "spare" command-line
	keys suitable for this option by looking at |ex-edit-index|. Normally
	you'll never actually type 'wildcharm', just use it in mappings that
	automatically invoke completion mode, e.g.:
>		:set wcm=<C-Z>
>		:cmap ss so $vim/sessions/*.vim<C-Z>
	Then after typing :ss you can use CTRL-P & CTRL-N.

						*'wildignore'* *'wig'*
'wildignore' 'wig'	string	(default "")
			global
			{not in Vi}
			{not available when compiled without the |+wildignore|
			feature}
	A list of file patterns.  A file that matches with one of these
	patterns is ignored when completing file or directory names.
	The pattern is used like with |:autocmd|, see |autocmd-patterns|.
	Also see 'suffixes'.
	Example:
>		:set wildignore=*.o,*.obj
	The use of |:set+=| and |:set-=| is preferred when adding or removing
	a pattern from the list.  This avoids problems when a future version
	uses another default.

				*'wildmenu'* *'wmnu'* *'nowildmenu'* *'nowmnu'*
'wildmenu' 'wmnu'	boolean	(default off)
			global
			{not in Vi}
			{not available if compiled without the |+wildmenu|
			feature}
	When 'wildmenu' is on, command-line completion operates in an enhanced
	mode.  On pressing 'wildchar' (usually <Tab>) to invoke completion,
	the possible matches are shown just above the command line, with the
	first match highlighted (overwriting the status line, if there is
	one).  Keys that show the previous/next match, such as <Tab> or
	CTRL-P/CTRL-N, cause the highlight to move to the appropriate match.
	When 'wildmode' is used, "wildmenu" mode is used where "full" is
	specified.  "longest" and "list" do not start "wildmenu" mode.
	If there are more matches than can fit in the line, a ">" is shown on
	the right and/or a "<" is shown on the left.  The status line scrolls
	as needed.
	The "wildmenu" mode is abandoned when a key is hit that is not used
	for selecting a completion.
	While the "wildmenu" is active the following keys have special
	meanings:

	<Left> <Right>	- select previous/next match (like CTRL-P/N)
	<Down>		- in filename/menu name completion: move into a
			  subdirectory or submenu.
	<CR>		- in menu completion, when the cursor is just after a
			  dot: move into a submenu.
	<Up>		- in filename/menu name completion: move up into
			  parent directory or parent menu.

	This makes the menus accessible from the console |console-menus|.

	The "WildMenu" highlighting is used for displaying the current match
	|hl-WildMenu|.

						*'wildmode'* *'wim'*
'wildmode' 'wim'	string	(Vim default: "full")
			global
			{not in Vi}
	Completion mode that is used for the character specified with
	'wildchar'.  It is a comma separated list of up to four parts.  Each
	part specifies what to do for each consecutive use of 'wildchar.  The
	first part specifies the behavior for the first use of 'wildchar',
	The second part for the second use, etc.
	These are the possible values for each part:
	""		Complete only the first match.
	"full"		Complete the next full match.  After the last match,
			the original string is used and then the first match
			again.
	"longest"	Complete till longest common string.  If this doesn't
			result in a longer string, use the next part.
	"longest:full"	Like "longest", but also start 'wildmenu' if it is
			enabled.
	"list"		When more than one match, list all matches.
	"list:full"	When more than one match, list all matches and
			complete first match.
	"list:longest"	When more than one match, list all matches and
			complete till longest common string.
	When there is only a single match, it is fully completed in all cases.

	Examples:
>  set wildmode=full
	Complete first full match, next match, etc. (the default)
>  set wildmode=longest,full
	Complete longest common string, then each full match.
>  set wildmode=list:full
	List all matches and complete each full match.
>  set wildmode=list,full
	List all matches without completing, then each full match.
>  set wildmode=longest,list
	Complete longest common string, then list alternatives.

						*'winaltkeys'* *'wak'*
'winaltkeys' 'wak'	string	(default "menu")
			global
			{not in Vi}
			{only used in Win32 and Motif GUI; GTK only supports
			"yes" and "menu"}
	Some GUI versions allow the access to menu entries by using the ALT
	key in combination with a character that appears underlined in the
	menu.  This conflicts with the use of the ALT key for mappings and
	entering special characters.  This option tells what to do:
	  no	Don't use ALT keys for menus.  ALT key combinations can be
		mapped, but there is no automatic handling.  This can then be
		done with the |:simalt| command.
	  yes	ALT key handling is done by the windowing system.  ALT key
		combinations cannot be mapped.
	  menu	Using ALT in combination with a character that is a menu
		shortcut key, will be handled by the windowing system.  Other
		keys can be mapped.
	If the menu is disabled by excluding 'm' from 'guioptions', the ALT
	key is never used for the menu.
	In the Win32 version, the <F10> key is handled like this too, since
	Windows uses it to select a menu.

						*'winheight'* *'wh'*
'winheight' 'wh'	number	(default 1)
			global
			{not in Vi}
	Minimal number of lines for the current window.  This is not a hard
	minimum, Vim will use less lines if there is not enough room.  If the
	current window is smaller, its size is increased, at the cost of the
	height of other windows.  Set it to 999 to make the current window
	always fill the screen.  Set it to a small number for normal editing.
	The height is not adjusted after one of the commands to change the
	height of the current window.
	'winheight' applies to the current window.  Use 'winminheight' to set
	the minimal height for other windows.

						*'winminheight'* *'wmh'*
'winminheight' 'wmh'	number	(default 1)
			global
			{not in Vi}
	The minimal height of a window, when it's not the current window.
	This is a hard minimum, windows will never become smaller.
	When set to zero, windows may be "squashed" to zero lines (i.e. just a
	status bar) if necessary.  They will return to at least one line when
	they become active (since the cursor has to have somewhere to go.)
	Use 'winheight' to set the minimal height of the current window.
	This option is only checked when making a window smaller.  Don't use a
	large number, it will cause errors when opening more than a few
	windows.  A value of 0 to 3 is reasonable.

						*'wrap'* *'nowrap'*
'wrap'			boolean	(default on)
			local to window
			{not in Vi}
	When on, lines longer than the width of the window will wrap and
	displaying continues on the next line.  When off lines will not wrap
	and only part of long lines will be displayed.  When the cursor is
	moved to a part that is not shown, the screen will scroll horizontally
	(also see 'sidescroll' and 'listchars' options and |wrap-off|).  If
	you want to break long lines, see 'textwidth'.

						*'wrapmargin'* *'wm'*
'wrapmargin' 'wm'	number	(default 0)
			local to buffer
	Number of characters from the right window border where wrapping
	starts.  When typing text beyond this limit, an <EOL> will be inserted
	and inserting continues on the next line.  When 'textwidth' is
	non-zero, this option is not used.  See also 'formatoptions' and
	|ins-textwidth|.  {Vi: works differently and less useful}

				   *'wrapscan'* *'ws'* *'nowrapscan'* *'nows'*
'wrapscan' 'ws'		boolean	(default on)
			global
	Searches wrap around the end of the file.

						   *'write'* *'nowrite'*
'write'			boolean	(default on)
			global
			{not in Vi}
	Allows writing files.  When not set, writing a file is not allowed.
	Can be used for a view-only mode, where modifications to the text are
	still allowed.  Can be reset with the |-m| command line argument.
	Filtering text is still possible, even though this requires writing a
	temporary file.

				   *'writeany'* *'wa'* *'nowriteany'* *'nowa'*
'writeany' 'wa'		boolean	(default off)
			global
	Allows writing to any file with no need for "!" override.

			     *'writebackup'* *'wb'* *'nowritebackup'* *'nowb'*
'writebackup' 'wb'	boolean	(default on with |+writebackup| feature, off
					otherwise)
			global
			{not in Vi}
	Make a backup before overwriting a file.  The backup is removed after
	the file was successfully written, unless the 'backup' option is
	also on.  Reset this option if your file system is almost full.  See
	|backup-table| for another explanation.
	NOTE: This option is set to the default value when 'compatible' is
	set.

						*'writedelay'* *'wd'*
'writedelay' 'wd'	number	(default 0)
			global
			{not in Vi}
	The number of microseconds to wait for each character sent to the
	screen.  When non-zero, characters are sent to the terminal one by
	one.  For MS-DOS pcterm this does not work.  For debugging purposes.

 vim:tw=78:ts=8:sw=8:
