Arguments: scroll-bar
Starting in release 6.0, this generic function is named thumb-length. visible-portion is maintained in release 6.0 as an alternate name, for backward compatibility.
Common Graphics and IDE documentation is described in About Common Graphics and IDE documentation in cgide.htm.
The documentation is described in introduction.htm and the index is in index.htm.
Copyright (c) 1998-2000, Franz Inc. Berkeley, CA., USA. All rights reserved.
Created 2000.10.5.