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Org mode is a variant of Outline mode for using Emacs as an organizer and/or authoring system. Files with names ending in the extension .org are opened in Org mode (see Choosing Modes). To explicitly switch to Org mode, type M-x org-mode.
In Org mode, as in Outline mode, each entry has a heading line that starts with one or more ‘*’ characters. See Outline Format. In addition, any line that begins with the ‘#’ character is treated as a comment.
Org mode provides commands for easily viewing and manipulating the
outline structure. The simplest of these commands is <TAB>
org-cycle). If invoked on a heading line, it cycles through
the different visibility states of the subtree: (i) showing only that
heading line, (ii) showing only the heading line and the heading lines
of its direct children, if any, and (iii) showing the entire subtree.
If invoked in a body line, the global binding for <TAB> is
Typing S-<TAB> (
org-shifttab) anywhere in an Org mode
buffer cycles the visibility of the entire outline structure, between
(i) showing only top-level heading lines, (ii) showing all heading
lines but no body lines, and (iii) showing everything.
You can move an entire entry up or down in the buffer, including its
body lines and subtree (if any), by typing M-<UP>
org-metaup) or M-<DOWN> (
org-metadown) on the
heading line. Similarly, you can promote or demote a heading line
with M-<LEFT> (
org-metaleft) and M-<RIGHT>
org-metaright). These commands execute their global bindings
if invoked on a body line.
The following subsections give basic instructions for using Org mode as an organizer and as an authoring system. For details, see The Org Mode Manual.