special case of Insert mode.  You
                        can do the same things as in Insert mode, but for
                        each character you enter, one character of the existing
                        text is deleted.  See |Replace-mode|.
                        If the 'showmode' option is on "-- REPLACE --" is
                        shown at the bottom of the window.

- Virtual Replace mode: Virtual Replace mode is similar to Replace mode, but
                        instead of file characters you are replacing screen
                        real estate.  See |Virtual-Replace-mode|.
                        If the 'showmode' option is on "-- VREPLACE --" is
                        shown at the bottom of the window.

- Insert Normal mode:   Entered when CTRL-O is typed in Insert mode (see
                        |i_CTRL-O|).  This is like Normal mode, but after
                        executing one command Vim returns to Insert mode.
                        If the 'showmode' option is on "-- (insert) --" is
                        shown at the bottom of the window.

- Insert Visual mode:   Entered when starting a Visual selection from Insert
                        mode, e.g., by using CTRL-O and then "v", "V" or
                        CTRL-V.  When the Visual selection ends, Vim returns
                        to Insert mode.
                        If the 'showmode' option is on "-- (insert) VISUAL --"
                        is shown at the bottom of the window.

- Insert Select mode:   Entered when starting Select mode from Insert mode.
                        E.g., by dragging the mouse or <S-Right>.
                        When the Select mode ends, Vim returns to Insert mode.
                        If the 'showmode' option is on "-- (insert) SELECT --"
                        is shown at the bottom of the window.

==============================================================================
Switching from mode to mode                             *mode-switching*

If for any reason you do not know which mode you are in, you can always get
back to Normal mode by typing <Esc> twice.  This doesn't work for Ex mode
though, use ":visual".
You will know you are back in Normal mode when you see the screen flash or
hear the bell after you type <Esc>.  However, when pressing <Esc> after using
CTRL-O in Insert mode you get a beep but you are still in Insert mode, type
<Esc> again.

                                                        *i_esc*
 >
 FROM mode      TO mode
                Normal  Visual  Select  Insert    Replace   Cmd-line  Ex >
 Normal                 v V ^V    *4     *1        R gR     : / ? !   gQ
 Visual          *2               ^G     c C        --        :       --
 Select          *5     ^O ^G            *6         --        --      --
 Insert          <Esc>    --      --              <Insert>    --      --
 Replace         <Esc>    --      --    <Insert>              --      --
 Command-line    *3       --      --     :start     --                --
 Ex              :vi      --      --     --         --        --

 -- not possible
<

- 1 Go from Normal mode to Insert mode by giving the command "i", "I", "a",
    "A", "o", "O", "c", "C", "s" or S".
- 2 Go from Visual mode to Normal mode by giving a non-movement command, which
    causes the command to be executed, or by hitting <Esc> "v", "V" or "CTRL-V"
    (see |v_v|), which just stops Visual mode without side effects.
- 3 Go from Command-line mode to Normal mode by:
    - Hitting <CR> or <NL>, which causes the entered command to be executed.
    - Deleting the complete line (e.g., with CTRL-U) and giving a final <BS>.
    - Hitting CTRL-C or <Esc>, which quits the command-line without executing
      the command.
    In the last case <Esc> may be the character defined with the 'wildchar'
    option, in which case it will start command-line completion.  You can
    ignore that and type <Esc> again.
- 4 Go from Normal to Select mode by:
    -