Hi All, Lets start moving on to the real work now. For any good specification we need some goals to test if it fits the use it is intended for. 1) a basis for a master format for PG 2) a basis for testing if a format can be used to mark up a book that is used and accepted by PG 3) a basis for a mark up language or needed features 4) a basis for what should be used to constrain the use of features in any given mark up language so that the file can be accepted by PG 5) a basis for building converters to the master format 6) should be able to capture the original layout of the book 7) should consider that it is to be used for creating derivative works in the output formats PG supports 8) should be strict! That is avoid having more than one way to mark up a feature. 9) will not based on any mark up language I think that wraps that up fairly, good. Did I miss anything? Of course I am assuming PG will adopt this in the end or at least sanction it as a best practice. So: 10) used by PG as a guide. regards Keith.