3 <cql2rpn>pqf.properties</cql2rpn>
4 <explain xmlns="http://explain.z3950.org/dtd/2.0/">
6 <retrieval syntax="usmarc" name="marc21"/>
7 <retrieval syntax="unimarc" name="unimarc"/>
8 <retrieval syntax="xml" name="marcxml" identifier="info:srw/schema/1/marcxml-v1.1"/>