
    </TR>
    <TR>
        <TD VALIGN="top"><I>buffer_size</I></TD><TD WIDTH="2em" VALIGN="top">-</TD>
        <TD>The size of any buffers that need to be allocated</TD>
    </TR>
    <TR>
        <TD VALIGN="top"><I>pback_size</I></TD><TD WIDTH="2em" VALIGN="top">-</TD>
        <TD>The size of the putback buffer, relevant only if <CODE>Mode</CODE> is a refinement of <A HREF="modes.html#input"><CODE>input</CODE></TD>
    </TR>
</TABLE>

<A NAME="stream_forwarding_constructors"></A>
<PRE>    <SPAN CLASS="ke