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