+2013-11-10 Jan Djärv <jan.h.d@swipnet.se>
+
+ * keymaps.texi (Tool Bar): Mention that Gtk+/NS ignores item 1 to 3.
+
2013-11-09 Xue Fuqiao <xfq.free@gmail.com>
* os.texi (Startup Summary): Add an index about startup screen.
@end table
@end table
+The GTK+ and NS versions of Emacs ignores items 1 to 3, because disabled and/or
+deselected images are autocomputed from item 0.
+
If @var{image} is a single image specification, Emacs draws the tool bar
button in disabled state by applying an edge-detection algorithm to the
image.