+ Finally, this example configuration can be queried using &acro.pqf;
+ queries, either transported by &acro.z3950;, (here using a yaz-client)
+ <screen>
+ <![CDATA[
+ Z> open localhost:9999
+ Z> elem dc
+ Z> form xml
+ Z>
+ Z> f @attr 1=dc_creator Kumar
+ Z> scan @attr 1=dc_creator adam
+ Z>
+ Z> f @attr 1=dc_title @attr 4=2 "proceeding congress superconductivity"
+ Z> scan @attr 1=dc_title abc
+ ]]>
+ </screen>
+ or the proprietary
+ extensions <literal>x-pquery</literal> and
+ <literal>x-pScanClause</literal> to
+ &acro.sru;, and &acro.srw;
+ <screen>
+ <![CDATA[
+ http://localhost:9999/?version=1.1&operation=searchRetrieve&x-pquery=%40attr+1%3Ddc_creator+%40attr+4%3D6+%22the
+ http://localhost:9999/?version=1.1&operation=scan&x-pScanClause=@attr+1=dc_date+@attr+4=2+a
+ ]]>
+ </screen>
+ See <xref linkend="zebrasrv-sru"/> for more information on &acro.sru;/&acro.srw;
+ configuration, and <xref linkend="gfs-config"/> or the &yaz;
+ <ulink url="&url.yaz.cql;">&acro.cql; section</ulink>
+ for the details or the &yaz; frontend server.
+ </para>
+ <para>