SS="keyword">const</SPAN>] U1&amp; u1, <SPAN CLASS="keyword">const</SPAN> U2&amp; u2, <SPAN CLASS="omitted">...</SPAN>, <SPAN CLASS="keyword">const</SPAN> UN&amp; uN);

    <SPAN CLASS="keyword">bool</SPAN> <A CLASS="documented" HREF="#stream_is_open">is_open</A>() <SPAN CLASS="keyword">const</SPAN>;
    <SPAN CLASS="keyword">void</SPAN> <A CLASS="documented" HREF="#stream_close">close</A>();

        <SPAN CLASS="comment">// Device access</SPAN>
    
    T&amp; <A CLASS='documented' HREF="#stream_operator_