The following vi keys are supported for navigating and editing, after setting vi Mode in the options.

key action single char commands a insert after cursor b move left one word e move word right end g start of document h move left i insert before cursor j move down k move up l move right n repeat the most recent search, in the same direction o insert after line p put after cursor q stop macro recording u undo v enter visual mode w move right one word x delete space right one character A insert after end of line B left one word (same as b) C change to end of line D delete line right E word right end (same as e) G goto end or line number if prefixed H goto first line of the screen I insert at begin J join lines L goto last line of the screen M goto middle line of the screen N repeat the most recent search, in the opposite direction from original search O insert before line P put before cursor R replace many chars, enters overtype mode V enter visual line mode W right one word (same as w) X delete backwards / next occurrence ? previous occurrence . repeat last action ; repeat last find char ~ toggle case $ end of line 0,^ begin of line { paragraph up, in visual mode adds to selection } paragraph down, in visual mode adds to selection ( paragraph up, in visual mode adds to selection (same as {) ) paragraph down, in visual mode adds to selection (same as }) [ move to previous "{...}" section ] move to next "{...}" section % matching brace, in visual mode selects with matching brace # previous occurrence of word under cursor * next occurrence of word under cursor + move to first character on the next line - move to first character on the previous line | goto column number specified by prefix tab indents selection TAB dedents selection ESC escape deselects, goes back to normal mode

key action control char commands ctrl b page up ctrl e increment word under cursor ctrl f page down ctrl g shows filename and state ctrl j decrement word under cursor ctrl p scroll up ctrl q scroll down ctrl r? inserts contents of register ? ctrl r% inserts contents of % register, or copies contents to clipboard if not in insert mode ctrl r= enters register calculation mode double or more char commands cc change line cw change word dd delete line or selection de delete word (to end of word) d0 delete line left d$ delete line right dgg delete from start of the file until current line dG delete from current line until end of the file dw delete word f? find next character F? find previous character gg goto begin m? mark current line (one letter marker) qx record macro x qX record macro x (appends to x) @x plays back macro x (register) @Xx@ plays back macro Xx (several characters) @@ plays back last macro r? replace current character only t? find next character, caret before pos T? find previous character, caret before pos yw yank word yy yank line or selection ZZ save and quit zc fold close zo fold open zE fold disable zf fold enable '? goto marker ? "x prepares register x for p, yy, yw, de, dd, dw, d0, d$ "X appends contents of yy, yw, de, dd, dw, d0, d$ to register x >> increase indent for current line, selection or visual area << decrease indent for current line, selection or visual area

key action colon commands :.= current line :$ goto end of document :close closes current document :d delete current line :e edit (show select file dialog) :e * edit file * (with tab expansion) :n next :prev previous :q quit unless modified :q! quit forced :r * insert contents of file * below cursor :r !command executes command and inserts output below cursor :[range]> increase indent for range :[range]< decrease indent for range :[range]d delete range :[range]mx move range to destination address x :[range]s/p/r/[flags] substitutes in range p by r using flags :[range]!command filters range, range is used as input for command, output replaces range :reg shows registers :set ic sets ignore case :set ic! sets match case :set list shows whitespace :set list! hides whitespace :set nu shows line numbers :set nu! hides line numbers :set syntax=lexer sets lexer :set ts=no sets tabstop at every no :set tabstop=no sets tabstop at every no :syntax on use syntax highlighting :syntax off stops syntax highlighting :w save :w * save to file * :x save and quit :y yank current line :!command executes command and shows output global commands :g// remove all markers :g/pattern/d delete lines containing pattern :g/pattern/ mark lines containing pattern :g/pattern/p print lines containing pattern, the lines are put on a new tab pane called Print :g/pattern/s/replacement substitute pattern by replacement

[range]

chars	range
%	entire document
*	visible area
'<,'>	visual (selected) area
.	current line only
x,y	line x to y (x,y can be a ., $, marker, or line no)

[register]

name	purpose	explanation
.	insert register	last inserted text
0	yank register	last yank value
1 - 9	delete registers	queue of 9 last deleted values
a - z	standard registers	normal register
*	clipboard register	contents of clipboard
%	filename register	current filename
_	black hole register	anything written to it is not kept

[flags]

char	purpose
i	ignore case
c	ask for confirmation
g	global, otherwise only first match on line

When substituting you can use & or \0 to represent the target, and \U to convert to uppercase and \L to convert to lowercase. You can use a $ to match a line end, e.g. %s/$/EOL appends the string EOL at the end of each line. Merging is not yet possible using a \n target, you can create a macro for that. You can use ~ to match against a previous replacement string.

Most commands can be prefixed with a multidigit number, that takes care of repeating that command the number specified.

Replace uses regular expressions from scintilla:

char	purpose
.	Matches any character
\(	This marks the start of a region for tagging a match.
\)	This marks the end of a tagged region.
\n	Where n is 1 through 9 refers to the first through ninth tagged region when replacing. For example, if the search string was Fred\([1-9]\)XXX and the replace string was Sam\1YYY, when applied to Fred2XXX this would generate Sam2YYY. \0 refers to all of the matching text.
\<	This matches the start of a word using Scintilla's definitions of words.
\>	This matches the end of a word using Scintilla's definition of words.
\x	This allows you to use a character x that would otherwise have a special meaning. For example, \[ would be interpreted as [ and not as the start of a character set.
[...]	This indicates a set of characters, for example, [abc] means any of the characters a, b or c. You can also use ranges, for example [a-z] for any lower case character.
[^...]	The complement of the characters in the set. For example, [^A-Za-z] means any character except an alphabetic character.
^	This matches the start of a line (unless used inside a set, see above).
$	This matches the end of a line.
*	This matches 0 or more times. For example, Sa*m matches Sm, Sam, Saam, Saaam and so on.
+	This matches 1 or more times. For example, Sa+m matches Sam, Saam, Saaam and so on.

Regular expressions will only match ranges within a single line, never matching over multiple lines.