+ "Reformat function declarations in the region between BEG and END.
+
+The `gnome-c-align-identifier-start-column',
+`gnome-c-align-arglist-start-column', and
+`gnome-c-align-arglist-identifier-start-column' variables
+control the widths.
+
+To set those variables, use \\[gnome-c-align-set-column],
+\\[gnome-c-align-guess-columns], or
+\\[gnome-c-align-guess-optimal-columns].
+
+If they are not set, this function internally calls
+\\[gnome-c-align-guess-optimal-columns] before formatting."