Not clear what benefit for commerce is.
Assumption is improvement.
Seems like a reasonable thing to do Know there are smart people working on it 3. XML Handbook is good, but exhaustive SGML for Dummies is a pretty good place to start 4. List of Books XML Handbook . Goldfarb, C.FPaul Prescod. C.F. Goldfarb Series on Open Information Management SGML for Dummies .