Arguments: section subsection &optional count
Returns the previous subsection in the given section before the given
subsection, and the index within that subsection as a second value. If
the first subsection is passed in, then nil
is returned.
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.