Thanks. I'm happy to completely knock down my strawman and substitute yours! However, since I believe we will need feature sets for other media types (TIFF and PDF and JPEG and PNG and VRML and so forth) as well as for HTML, could you please extract 'Appendix B' of http://www.stonehand.com/murray/draft-altheim-fpi-ptd-00.txt make a separate document? Thanks! Larry