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THE META-HTML LANGUAGE REFERENCE MANUAL

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Function Name:
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Function Type:	Simple Complex Variable Reference
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Description:	Add <var amount> (default 1) to the contents of the variable named by <var varname>. <example> <set-var foo=1> <get-var foo> --> 1 <increment foo> <get-var foo> --> 2 </example> Also see <funref variables decrement>.