Options

ai

autoindent - In append mode after a <cr> the cursor will move directly below the first CHAR on the previous line.

ic

ignorecase - No distinction between upper and lower cases when searching.

magic

Regular expressions used in searches. nomagic means no regexps.

ro

readonly - The file is not to be changed. However, :w! will override this option.

sh=<string>

shell - The program to be used for shell escapes (default `$SHELL' (default `/bin/sh')).

sw=<count>

shiftwidth - Gives the shiftwidth (default 8 positions).

sm

showmatch - Whenever you append a ), vi shows its match if it's on the same page; also with { and }. If there's no match, vi will beep.

ts=<count>

tabstop - The length of a <ht>; warning: this is only IN the editor, outside of it <ht>s have their normal length (default 8 positions).

wm=<count>

wrapmargin - In append mode vi automatically puts a <lf> whenever there is a <sp> or <ht> within <wm> columns from the right margin.

ws

wrapscan - When searching, the end is considered `stuck' to the begin of the file.

:set <option>

Turn <option> on.

:set no<option>

Turn <option> off.

:set <option>=<value>

Set <option> to <value>.