1 | XML = eXtensible Markup Language |
2 | XML is a subset of SGML -- Standard Generalized Markup Language, but unlike the latter, XML is specifically designed for the web |
3 | XML is used to define logical document structure |
4 | XML is not backward compatible with HTML, but the two coexist quite elegantly |
5 | XML can be thought of as an ASCII version of a database |