I put up my scitex ct file format docs at http://electricmessiah.org/jay/ct.html. Its amazing to me that a file format that has gotten so much use for so long didn't already have any information about it online. I guess I'd should send an announcement to the various graphics file format faq sites.
I put gegl "opgen" into cvs the other day. I am pretty happy with it so far. We will have a crazy pipeline to compile the code... XML formated source code -> opgen -> gil -> gob -> c compiler ->linker