While a well-formed document is well-formed because it follows rules defined by the XML spec, a valid document is valid because it matches its document type definition (DTD). The DTD is the grammar ...

Have you ever played the “spot the development platform” game? In my version of it, points are awarded to players who correctly guess what programming language an application is written in, simply by ...

Nearly everyone is talking about XML (Extensible Markup Language) these days. But few understand what it's really all about. XML's proponents claim it will cure everything that's wrong with HTML and ...

SGML (standard generalized markup language) is a standard for how to specify a document markup language or tag set. Such a specification is itself a document type definition (DTD). SGML is not in ...

If hearing "XML this" and "XML that" has your head spinning, this basic tutorial will help. Get up to speed on when, why, and how to use XML. If you’ve been stuck on some legacy project, the gap ...

THE GOOD NEWS is that Office 11 supports XML Schema. The bad news is that XML Schema has been described even by XML experts as “confusing,” “impenetrable,” “fuzzy,” and “as user-friendly as a stick in ...

1.1 Summary of changes in version 3.4 1.2 Summary of changes in version 3.5 1.3 Summary of changes in version 3.6 Please let us know of any problems you encounter in using these instructions while ...