Indicates the direction a sub-menu will appear.
</para>
-@GTK_DIRECTION_LEFT: A sub-menu will appear
-@GTK_DIRECTION_RIGHT:
+@GTK_DIRECTION_LEFT: A sub-menu will appear to the left of the current menu.
+@GTK_DIRECTION_RIGHT: A sub-menu will appear to the right of the current menu.
<!-- ##### ENUM GtkSubmenuPlacement ##### -->
<para>