For iso2709, can also specify a native character set, e.g. "iso2709;latin-1".
If no character set is provided, MARC-8 is assumed.
</para>
+ <para>
+ If pz:nativesyntax is not specified, pazpar2 will attempt to determine
+ the value based on the response from the server.
+ </para>
</listitem>
</varlistentry>
</para>
</listitem>
</varlistentry>
+
+ <varlistentry>
+ <term>pz:pqf_prefix</term>
+ <listitem>
+ <para>
+ Allows you to specify an arbitrary PQF query language substring. The provided
+ string is prefixed the user's query after it has been normalized to PQF
+ internally in pazpar2. This allows you to attach complex 'filters' to
+ queries for a gien target, sometimes necessary to select sub-catalogs
+ in union catalog systems, etc.
+ </para>
+ </listitem>
+ </varlistentry>
</variablelist>
</refsect2>