+ <para>
+ The <function>bend_search</function> handler is also called when
+ the frontend server receives a SRW SearchRetrieveRequest.
+ For SRW, a CQL query is usually provided by the client.
+ The CQL query is available as part of <literal>Z_Query</literal>
+ structure (note that CQL is now part of Z39.50 via an external).
+ To support CQL in existing implementations that only do Type-1,
+ we refer to the CQL-to-PQF tool described
+ <link linkend="tools.cql.pqf">here</link>.
+ </para>