the necessary keywords to look them up in the manual, ChangeLog or other
sources of information.
+2005-08-28:
+
+ Several pre-defined read-only variables named $muttng_ have
+ been added; this feature is maybe subject to change in the near
+ future.
+
+ The $editor_headers option has been added.
+
+ The %Z expando of $index_format now also includes an 'A'
+ as the last character if a mail has attachments, i.e. is of
+ type multipart and a space otherwise.
+
2005-08-27:
The $debug_level option has been added.