><I>mem_level</I></TD><TD WIDTH="2em" VALIGN="top">-</TD>
        <TD>Specifies the amount of memory to be used. Must be in the range 1-9; defaults to 8. Affects compression only.</TD>
    </TR>
    <TR>
        <TD VALIGN="top"><A NAME="strategy"></A><I>strategy</I></TD><TD WIDTH="2em" VALIGN="top">-</TD>
        <TD>Must be <A HREF="zlib.html#default_strategy"><CODE>zlib::default_strategy</CODE></A>, <A HREF="zlib.html#filtered"><CODE>zlib::filtered</CODE></A> or <A HREF="zlib.html#huffman_only"><CODE>zli