A RESTful browser for eXist Java-Based Function Modules

http://www.w3.org/2005/xpath-functions
A module with the XQuery/XPath Core Library Functions
not
not($arg as item()*) xs:boolean
Returns true if the effective boolean value is false, and false if the effective boolean value is true.
$arg is reduced to an effective boolean value by applying the fn:boolean() function.
$argThe input items
Returns the negated effective boolean value (ebv) of $arg
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