The problem with tightly defining which piece of PDF you will support is that most clients don't give the user choice on what they do. A user gets a "export to PDF" button, but they don't get a "export to PDF/A and make sure all fonts are self-contained and don't include embedded video."
There's no question that we have a significant tools issue if we use a format as complex as PDF.
Regards, John Levine, johnl@xxxxxxxx, Primary Perpetrator of "The Internet for Dummies", Information Superhighwayman wanna-be, http://johnlevine.com, Mayor "I dropped the toothpaste", said Tom, crestfallenly. _______________________________________________ Ietf@xxxxxxxx https://www1.ietf.org/mailman/listinfo/ietf