re the only history that can be referenced and
  logically immediately precede the data compressed in the first subsequent
  compression call.

  The dictionary will only remain attached to the working stream through the
  first compression call, at the end of which it is cleared. The dictionary
  stream (and source buffer) must remain in-place / accessible / unchanged
  through the completion of the first compression call on the stream.
 
</p></pre><BR>

<a name="Chapter9"></a><h2>Private definitions</h2><