 compressed, but becomes a
literal part of the output stream.
</blockquote>


<p><a name='start-data-format'>[Generic function]</a><br>
<b>start-data-format</b> <i>compressor</i> => |

<blockquote>
Outputs any prologue bits or octets needed to produce a valid
compressed data stream for <i>compressor</i>. Called from
initialize-instance and <a href='#reset'><tt>RESET</tt></a> for
subclasses of deflate-compressor. Should not be called directly, but
subclasses may add methods to customize what literal data is 