  is a multiple of 31.




<span class="grey">Deutsch &amp; Gailly             Informational                      [Page 5]</span></pre>
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<span class="grey"><a href="./rfc1950">RFC 1950</a>       ZLIB Compressed Data Format Specification        May 1996</span>


      FDICT (Preset dictionary)
         If FDICT is set, a DICT dictionary identifier is pre