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 ...

Markup code, or markup language, is basically a set of words and symbols created by the computer industry with the goal of helping to process, organize, and present information, as well as to inform ...

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 ...

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 ...