What is XML
In five words or less you mean? That can’t be done. XML are initials for EXtensible Markup Language. Seems strange that the first word is “Extensible,” yet they use the “X” to denote the word. My guess is that “XML” looked a lot cooler than “EXL.”
You may not know this, but HTML and XML are brother and sister. Their mother is SGML. SGML (Standard Generalized Markup Language) is the overriding language that produced both XML and HTML.