<SPAN CLASS="keyword">typename</SPAN> UN&gt;
    <SPAN CLASS="keyword">void</SPAN> <B>open</B>([<SPAN CLASS="keyword">const</SPAN>] U1& u1, <SPAN CLASS="keyword">const</SPAN> U2& u2, <SPAN CLASS="omitted">...</SPAN>, <SPAN CLASS="keyword">const</SPAN> UN& uN);</PRE>

<P>
    Each of these members associates with <CODE>this</CODE> instance of <CODE>stream</CODE> a newly constructed instance of the Device <CODE>T</CODE> constructed from the given lists of arguments, if there is no such instance currently asso