images from singular

Hi,

I had a mail exchange with Hans Schoeneman about some images included with
the Singular manual, and we agreed that it would be nice if these images
were included with texi2html. After some discussion, as Hans wanted something 
like the GPL, we agreed that we should use the same copyright than for the 
remaining of texi2html (ie the FSF) and the Attribution-ShareAlike licence
of creative commons 
http://creativecommons.org/licenses/
as (as far as I understand) Attribution imposes the copyright, and ShareAlike 
imposes the derivative work to be licensed under the same licence that the 
original work.

Do you agree with that ?

If yes I think that these images should be in a specific directory. Otherwise
do you have an idea on how to include them, given that they shouldn't be
in cvs (I guess) ?

Pat