f <CODE>Mode</CODE> is a refinement of <A HREF="modes.html#input"><CODE>input</CODE></TD>
    </TR>
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<A NAME="stream_forwarding_constructors"></A>
<PRE>    <SPAN CLASS="keyword">template</SPAN>&lt;<SPAN CLASS="keyword">typename</SPAN> U&gt;
    <B>stream</B>([<SPAN CLASS="keyword">const</SPAN>] U&amp; u);

    <SPAN CLASS="keyword">template</SPAN>&lt;<SPAN CLASS="keyword">typename</SPAN> U1, <SPAN CLASS="keyword">typename</SPAN> U2&gt;
    <B>stream</B>([<SPAN CLASS="keyword">const</SPAN>] U1&amp; 