(like "w" command)   *i_<C-Right>*
<Home>		cursor to first char in the line	     *i_<Home>*
<End>		cursor to after last char in the line	     *i_<End>*
<C-Home>	cursor to first char in the file	     *i_<C-Home>*
<C-End>		cursor to after last char in the file	     *i_<C-End>*
<LeftMouse>	cursor to position of mouse click	     *i_<LeftMouse>*
<S-Up>		move window one page up			     *i_<S-Up>*
<PageUp>	move window one page up			     *i_<PageUp>*
<S-Down>	move window one page down		     *i_<S-Down>*
<PageDown>	move window one page down		     *i_<PageDown>*
<ScrollWheelDown>    move window three lines down	*i_<ScrollWheelDown>*
<S-ScrollWheelDown>  move window one page down		*i_<S-ScrollWheelDown>*
<ScrollWheelUp>      move window three lines up		*i_<ScrollWheelUp>*
<S-ScrollWheelUp>    move window one page up		*i_<S-ScrollWheelUp>*
<ScrollWheelLeft>    move window six columns left	*i_<ScrollWheelLeft>*
<S-ScrollWheelLeft>  move window one page left		*i_<S-ScrollWheelLeft>*
<ScrollWheelRight>   move window six columns right	*i_<ScrollWheelRight>*
<S-ScrollWheelRight> move window one page right		*i_<S-ScrollWheelRight>*
CTRL-O		execute one command, return to Insert mode   *i_CTRL-O*
CTRL-\ CTRL-O	like CTRL-O but don't move the cursor	     *i_CTRL-\_CTRL-O*
CTRL-G u	close undo sequence, start new change	     *i_CTRL-G_u*
CTRL-G U	don't start a new undo block with the next   *i_CTRL-G_U*
		left/right cursor movement, if the cursor
		stays within the same line

-----------------------------------------------------------------------

The CTRL-O command sometimes has a side effect: If the cursor was beyond the
end of the line, it will be put on the last character in the line.  In
mappings it's often better to use <Esc> (first put an "x" in the text, <Esc>
will then always put the cursor on it).  Or use CTRL-\ CTRL-O, but then
beware of the cursor possibly being beyond the end of the line.  Note that the
command following CTRL-\ CTRL-O can still move the cursor, it is not restored
to its original position.

The CTRL-O command takes you to Normal mode.  If you then use a command enter
Insert mode again it normally doesn't nest.  Thus when typing "a<C-O>a" and
then <Esc> takes you back to Normal mode, you do not need to type <Esc> twice.
An exception is when not typing the command, e.g. when executing a mapping or
sourcing a script.  This makes mappings work that briefly switch to Insert
mode.

The shifted cursor keys are not available on all terminals.

Another side effect is that a count specified before the "i" or "a" command is
ignored.  That is because repeating the effect of the command after CTRL-O is
too complicated.

An example for using CTRL-G u: >

	:inoremap <C-H> <C-G>u<C-H>

This redefines the backspace key to start a new undo sequence.  You can now
undo the effect of the backspace key, without changing what you typed before
that, with CTRL-O u.  Another example: >

	:inoremap <CR> <C-]><C-G>u<CR>

This starts a new undo block at each line break.  It also expands
abbreviations before this.

An example for using CTRL-G U: >

	inoremap <Left>  <C-G>U<Left>
	inoremap <Right> <C-G>U<Right>
	inoremap <expr> <Home> col('.') == match(getline('.'), '\S') + 1 ?
	 \ repeat('<C-G>U<Left>', col('.') - 1) :
	 \ (col('.') < match(getline('.'), '\S') ?
	 \     repeat('<C-G>U<Right>', match(getline('.'), '\S') + 0) :
	 \     repeat('<C-G>U<Left>', col('.') - 1 - match(getline('.'), '\S')))
	inoremap <expr> <End> repeat('<C-G>U<Right>', col('$') - col('.'))
	inoremap ( ()<C-G>U<Left>

This makes it possible to use the cursor keys in Insert mode, without starting
a new undo block and therefore using |.| (redo) will work as expected.  Also
entering a text like (with the "(" mapping from above):

   Lorem ipsum (dolor

will be repeatable by using |.| to the expected

   Lorem ipsum (dolor)


Using CTRL-O splits undo: the text typed before and after it is undone
separately.  If you want to avoid this (e.g., in a mapping) you might be able
to use CTRL-R