<set name="pz:limitmap:author" value="ccl:author_phrase" />
<set name="pz:limitmap:subject" value="rpn:@attr 1=subject_exact" />
<set name="pz:limitmap:author" value="ccl:author_phrase" />
<set name="pz:limitmap:subject" value="rpn:@attr 1=subject_exact" />