%ISHANDLE True for graphics handles.
%   ISHANDLE(H) returns an array that contains 1's where the elements
%   of H are valid graphics handles and 0's where they are not.

%   Copyright 1984-2002 The MathWorks, Inc. 
%   $Revision: 1.9 $  $Date: 2002/04/10 17:06:23 $
%   Built-in function.