a</B> (in)<DD>
Arbitrary one-word value to pass to <I>proc</I>.
<P></DL>
<H3><A NAME="M5">DESCRIPTION</A></H3>
<B>Tk_OwnSelection</B> arranges for <I>tkwin</I> to become the
new owner of the selection specified by the atom
<I>selection</I>.  After this call completes, future requests
for the selection will be directed to handlers created for
<I>tkwin</I> using <B><A HREF="CrtSelHdlr.html">Tk_CreateSelHandler</A></B>.  When <I>tkwin</I>
eventually loses the selection ownership, <I>proc</I> will be
invoked so