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-===== XML Cheat Sheet =====
-I stumble across XML documents intermittently and every time I need to review the basics again. This is a cheat sheet so that I can review it whenever I need to. Information here is a summarized form of the [[http://www.w3schools.com/xml/default.asp | XML Tutorial]]
-==== What is XML ====
-E**X**tensible **M**arkup **L**anguage (XML) is a markup language designed to describe data. It has no predefined tags and uses a Document Type Definition (DTD) or an XML Schema to describe the data. An XML document together with its DTD or XML Schema is self-descriptive.
-XML uses text files to store data and can be used to create new languages e.g. WAP, WML, XHTML etc.
-==== XML Syntax ====
-A simple XML document :
-<code>
-<?xml version="1.0" encoding="ISO-8859-1"?>
-<note date="12/11/2002">
-<to>Tove</to>
-<from>Jani</from>
-</note>
-</code>
-  * The first line is an XML declaration which defines the XML version and the character encoding used in the document.
-  * XML tags are case-sensitive and must have a corresponding closing tag. Tags must be properly nested.
-  * An XML document must have a root element (note in the above). All elements may have child elements.
-  * XML documents can be extended by adding new element types. Implementations must ignore unknown element types.
-  * Whitespace is preserved. CR/LF is converted into just LF (UNIX format line terminators).
-  * <!-- This is a comment -->
-==== XML Elements ====
-XML Elements can have attributes which must be either single or double quoted e.g. date in the above.
-XML elements can have either
-  * Empty content
-  * Simple content(text ony)
-  * Element content (child elements)
-  * Mixed content (child elements and text)
-XML element names can contain any character except for a space but must start with a letter and can't start with xml (in any case).

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