XSLT Reference : Using Extension Objects : Using ePublisher XSLT Extensions
Using ePublisher XSLT Extensions
ePublisher implements a variety of extension objects to enable full processing of desired output within the language of XSL. In order to use them in XSL transforms they must be declared.
Here is an example of how to define namespace in you XSL file:
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0" xmlns="urn:WebWorks-Images-Schema"
exclude-result-prefixes="xsl wwlog"