<p:declare-step xmlns:p="http://www.w3.org/ns/xproc" xmlns:pxi="http://www.daisy.org/ns/pipeline/xproc/internal" version="1.0" type="pxi:ncc-to-epub3-nav-page-list" name="main"> <p:input port="source"> <p:documentation xmlns="http://www.w3.org/1999/xhtml"> <p>A NCC</p> </p:documentation> </p:input> <p:output port="result" sequence="true"> <p:documentation xmlns="http://www.w3.org/1999/xhtml"> <p>A <code>epub:type='page-list'</code> document for inclusion in a EPUB navigation document.</p> </p:documentation> </p:output> <p:xslt> <p:input port="stylesheet"> <p:document href="ncc-to-nav-page-list.xsl"/> </p:input> <p:input port="parameters"> <p:empty/> </p:input> </p:xslt> <p:choose> <p:when test="count(/*/*)=0"> <p:identity> <p:input port="source"> <p:empty/> </p:input> </p:identity> </p:when> <p:otherwise> <p:identity/> </p:otherwise> </p:choose> </p:declare-step>