Outline Mode
============
Outline mode is a major mode much like Text mode but intended for
editing outlines. It allows you to make parts of the text temporarily
invisible so that you can see the outline structure. Type `M-x
outline-mode' to switch to Outline mode as the major mode of the current
buffer.
When Outline mode makes a line invisible, the line does not appear on
the screen. The screen appears exactly as if the invisible line were
deleted, except that an ellipsis (three periods in a row) appears at the
end of the previous visible line (only one ellipsis no matter how many
invisible lines follow).
Editing commands that operate on lines, such as `C-n' and `C-p',
treat the text of the invisible line as part of the previous visible
line. Killing an entire visible line, including its terminating
newline, really kills all the following invisible lines along with it.
Outline minor mode provides the same commands as the major mode,
Outline mode, but you can use it in conjunction with other major modes.
Type `M-x outline-minor-mode' to enable the Outline minor mode in the
current buffer. You can also specify this in the text of a file, with
a file local variable of the form `mode: outline-minor' (Note:File
Variables).
The major mode, Outline mode, provides special key bindings on the
`C-c' prefix. Outline minor mode provides similar bindings with `C-c
@' as the prefix; this is to reduce the conflicts with the major mode's
special commands. (The variable `outline-minor-mode-prefix' controls
the prefix used.)
Entering Outline mode runs the hook `text-mode-hook' followed by the
hook `outline-mode-hook' (Note:Hooks).