* lisp/org.el (org-use-fast-todo-selection): Allow values
`auto' and `expert'.
(org-todo): Change the interpretation of the prefix argument.
A single `C-u' now forces taking a logging time stamp and note.
(org-fast-todo-selection): Implement the `expert' option of
`org-use-fast-todo-selection' and avoid showing the selection
window. Instead, show the options in the prompt.
* doc/org-manual.org: (Basic TODO Functionality): Document that `C-u
C-c C-t' is the simplest way to log a TODO state change.
(TODO keywords as workflow states): Slightly simplify text.
(TODO keywords as types): Document that tags should be used instead.
(Progress Logging, Closing items, Tracking TODO state changes):
Document that `C-u C-c C-t' is the simplest way to log a TODO
state change.
(Remote editing): Document using a prefix to the `org-agenda-todo'
command logs the state change.
(Using CDLaTeX to enter math): Document that CDLaTeX is available on
MELPA.
* doc/org-guide.org (Progress Logging): Document the use of a
prefix to `org-todo' to force logging.