	<else>
	<elseif>
	<false>
	<if>
	<if accept>
	<if client>
	<if clientvar>
	<if config>
	<if cookie>
	<if date>
	<if defined>
	<if domain>
	<if exists>
	<if expr>
	<if false>
	<if group>
	<if ip>
	<if language>
	<if match>
	<if pragma>
	<if prestate>
	<if referrer>
	<if sizeof>
	<if supports>
	<if time>
	<if true>
	<if user>
	<if variable>
	<then>
	<true>

<if variable></if>

Provided by module: RXML 2 parser

Does the variable exist and, optionally, does it's content match the pattern? Variable is an Eval plugin.

Attributes

variable="name[ is pattern]": Choose variable to test. Valid operators are '=', '==', 'is', '!=', '<' and '>'.