the necessary keywords to look them up in the manual, ChangeLog or other
sources of information.
+2006-01-13:
+
+ The semantics for $muttng_folder_name has slightly changed, see docs.
+
+2005-10-23:
+
+ The %u expando for $sidebar_number_format has been added.
+
2005-10-14:
The generic <rebuild-cache> function has been added.