William F. Hammond writes:
 > A good XML could be a good authoring language if one doesn't mind
 > being required always to use every element tag.  For example, in
good lord, do you type your XML _by hand_? thats what editors are for,
to help you insert end tags

 > HTML is not a good single source authoring language for multiple
 > targets.
strangely, this was not its desgn aim

 > For one thing a document type definition is optional with XML but
 > required with SGML (although it is not required to be a separate file
XML is a subset of SGML, vis-a-vis the markup. the usage is not the
same.

 > Hmmm...  Isn't "<br/>" formally incorrect syntax under SGML?  (My 1996
you need the recent TC to SGML to be implemented

Sebastian