Any headline becomes a TODO item when it starts with the word ‘TODO’, for example:
*** TODO Write letter to Sam Fortune
The most important commands to work with TODO entries are:
Rotate the TODO state of the current item among
,-> (unmarked) -> TODO -> DONE --. '--------------------------------'
The same rotation can also be done “remotely” from the agenda buffer with the t command key (see Agenda Commands).
Select the following/preceding TODO state, similar to cycling.
View TODO items in a sparse tree (see Sparse Trees). Folds the entire buffer, but shows all TODO items—with not-DONE state—and the headings hierarchy above them.
Show the global TODO list. Collects the TODO items (with not-DONE states) from all agenda files (see Agenda Views) into a single buffer. See Global TODO List, for more information.
Insert a new TODO entry below the current one.
Changing a TODO state can also trigger tag changes. See the docstring
of the option
org-todo-state-tags-triggers for details.