The license of the URW fonts

[Anton Zinoviev <anton@lml.bas.bg>]

Hi!

This is the license of the URW fonts:

% Copyright (URW)++,Copyright 1999 by (URW)++ Design & Development
% (URW)++,Copyright 1999 by (URW)++ Design & Development
% See the file COPYING (GNU General Public License) for license conditions.
% As a special exception, permission is granted to include this font
% program in a Postscript or PDF file that consists of a document that
% contains text to be displayed or printed using this font, regardless
% of the conditions or license applying to the document itself.

I'd like to ask if this `special exception' is valid for modified
fonts also or it is valid only for the original unmodified fonts.

Anton Zinoviev