@item
@cindex @code{lambda} in keymap
If the @sc{car} of @var{list} is @code{lambda}, then the list is a
-lambda expression. This is presumed to be a command, and is treated as
-such (see above).
+lambda expression. This is presumed to be a function, and is treated
+as such (see above). In order to execute properly as a key binding,
+this function must be a command---it must have an @code{interactive}
+specification. @xref{Defining Commands}.
@item
If the @sc{car} of @var{list} is a keymap and the @sc{cdr} is an event
The function @code{substitute-key-definition} scans a keymap for
keys that have a certain binding and rebinds them with a different
-binding. Another feature you can use for similar effects, but which
-is often cleaner, is to add a binding that remaps a command
-(@pxref{Remapping Commands}).
+binding. Another feature which is cleaner and can often produce the
+same results to remap one command into another (@pxref{Remapping
+Commands}).
@defun substitute-key-definition olddef newdef keymap &optional oldmap
@cindex replace bindings
@defvar tool-bar-button-relief
This variable specifies the shadow width for tool bar items.
The value is an integer, a number of pixels. The default is 1.
+@end defvar
+
+@tindex tool-bar-border
+@defvar tool-bar-border
+This variable specifies the height of the border drawn below the tool
+bar area. An integer value specifies height as a number of pixels.
+If the value is one of @code{internal-border-width} (the default) or
+@code{border-width}, the tool bar border height corresponds to the
+corresponding frame parameter.
@end defvar
You can define a special meaning for clicking on a tool bar item with