@c This is part of the Emacs manual.
-@c Copyright (C) 1985, 86, 87, 93, 94, 95, 1997 Free Software Foundation, Inc.
+@c Copyright (C) 1985, 86, 87, 93, 94, 95, 97, 2000 Free Software Foundation, Inc.
@c See file emacs.texi for copying conditions.
@node Building, Abbrevs, Programs, Top
@chapter Compiling and Testing Programs
* Debugger Operation:: Connection between the debugger and source buffers.
* Commands of GUD:: Key bindings for common commands.
* GUD Customization:: Defining your own commands for GUD.
+* GUD Tooltips:: Showing variable values by pointing with the mouse.
@end menu
@node Starting GUD
ignores any numeric argument.
@end table
+@node GUD Tooltips
+@subsection GUD Tooltips
+
+@cindex tooltips with GUD
+The Tooltip facility (@pxref{Tooltips}) provides support for GUD@. If
+GUD support is activated by customizing the @code{tooltip} group,
+variable values can be displayed in tooltips by pointing at them with
+the mouse in the GUD buffer or in source buffers with major modes in the
+customizable list @code{tooltip-gud-modes}.
+
@node Executing Lisp
@section Executing Lisp Expressions