se</CODE></A>. This behavior can be modified using the member function <A HREF="#set_auto_close"><CODE>set_auto_close</CODE></A>.
</P>
<P>
    The class template <CODE>chain</CODE> is parameterized by a <A HREF='../guide/modes.html'>mode</A>. All the Filters and Devices which constitute a chain must have modes which refine the mode of the chain. For example, the class <CODE>chain&lt;input&gt;</CODE> has mode <A HREF="../guide/modes.html#input">input</A>. All <A HREF="../concepts/filter.html">Filters</A> pus