+ xpath, xslt_sheet = checkProg('XSLT stylesheets for ePub', ['chunk.xsl'], '', ['/usr/share/xml/docbook/stylesheet/docbook-xsl-ns/epub3'])
+ if xslt_sheet == 'chunk.xsl':
+ xpath = '/usr/share/xml/docbook/stylesheet/docbook-xsl-ns'
+ else:
+ xpath = 'none'