2 (The fields used to describe targets in the IRSpy database are for
3 the most part those described in the
4 <a target="_blank" href="http://explain.z3950.org/"
6 specifications, now also codified as ANSI/NISO Z39.92.
8 <a target="_blank" href="http://explain.z3950.org/dtd/commentary.html"
9 >The ZeeRex DTD Commentary</a>.)