Headlines define the structure of an outline tree. The headlines in Org start on the left margin1 with one or more stars followed by a space. For example:
* Top level headline ** Second level *** Third level some text *** Third level more text * Another top level headline
Note that a headline named after
defaults to ‘Footnotes’, is considered as special. A subtree with
this headline will be silently ignored by exporting functions.
Some people find the many stars too noisy and would prefer an outline that has whitespace followed by a single star as headline starters. See Miscellaneous for a setup to realize this.
See the variable
org-special-ctrl-a/e to configure special
behavior of C-a and C-e in headlines.