The copyright notice reads something like
% \iffalse
%% (C) Copyright 1999-2000 Frank Mittelbach, David Carlisle, Chris Rowley
%% All rights reserved.
%% Not for general distribution. In its present form it is not allowed
%% to put this package onto CD or an archive without consulting the
%% the authors.

I would want to use some of that stuff for basing custom styles off
it.  I also want to help improve on the work, but my mails according
to that effect to [log in to unmask] have mostly met
/dev/null up to now seemingly.

So if I want to make a customer solution (something that he can also
send authors for his journal), can I work stuff like that in or would
I need to start my own project?

Thanks for any info about that.

David Kastrup, Kriemhildstr. 15, 44793 Bochum