-type</i> <i>stream</i>
=> <i>compressing-stream</i>

<blockquote>
Return a <i>compressing-stream</i> that transparently compresses its input
and writes it to <i>stream</i>. <i>compressor-type</i> is a symbol naming the
compressor class to use.

<p>Closing the returned <i>compressing-stream</i> merely finalizes the compression
and does not close <i>stream</i>.
</blockquote>

<p><a name='stream-closed-error'>[Condition]</a><br>
<b>stream-closed-error</b> <i>stream-error</i>

<blockquote>
Signaled when attemp