Improve documentation

lisp/ChangeLog

@@ -1,3 +1,7 @@
+2009-03-09  Carsten Dominik  <carsten.dominik@gmail.com>
+
+	* org-agenda.el (org-agenda-log-mode-items): Improve docstring.
+
 2009-03-08  Carsten Dominik  <carsten.dominik@gmail.com>
 
 	* org-exp.el (org-export-page-description)

lisp/org-agenda.el

@@ -755,7 +755,9 @@ This list may contain the following symbols:
 
   closed    Show entries that have been closed on that day.
   clock     Show entries that have received clocked time on that day.
-  state     Show all logged state changes."
+  state     Show all logged state changes.
+Note that instead of changing this variable, you can also press `C-u l' in
+the agenda to display all available LOG items temporarily."
   :group 'org-agenda-daily/weekly
   :type '(set :greedy t (const closed) (const clock) (const state)))