of the hook list, in case earlier members of the list change the order
of the diary entries, or add items.
+@vindex diary-comment-start
+ You can write @samp{comments} in diary entries, by setting the
+variables @code{diary-comment-start} and @code{diary-comment-end} to
+strings that delimit comments. The fancy display does not print
+comments. You might want to put meta-data for the use of other packages
+(e.g. the appointment package,
+@iftex
+@pxref{Appointments,,,emacs, the Emacs Manual})
+@end iftex
+@ifnottex
+@pxref{Appointments})
+@end ifnottex
+inside comments.
+
@vindex diary-include-string
Your main diary file can include other files. This permits a group of
people to share a diary file for events that apply to all of them.