+
+@node Biff, Advanced Settings, Highlights, Customization
+@section Notify Mail arrival
+@cindex Biff
+
+Following setting is to notify mail arrival of @samp{%inbox}
+by the indicator on the modeline
+
+@lisp
+(setq wl-biff-check-folder-list '("%inbox"))
+@end lisp
+
+@subsection Customizable Variables
+@table @code
+@item wl-biff-check-folder-list
+@vindex wl-biff-check-folder-list
+The initial setting is @code{nil}.
+This is the list of folders to check mail arrival.
+If @code{nil}, wl doesn't check mail arrival.
+
+@item wl-biff-check-interval
+@vindex wl-biff-check-interval
+The initial setting is 40 (in seconds).
+Check mail arrival in this period.
+
+@item wl-biff-notify-hook
+@vindex wl-biff-notify-hook
+The initial setting is @code{nil}.
+This is a hook run at the arrival of the new mail.
+To beep, set as:
+@lisp
+(setq wl-biff-notify-hook '(beep))
+@end lisp
+@end table
+
+
+@node Advanced Settings, Customizable Variables, Biff, Customization