s to your message handler. </P>
<P CLASS="refField">
Source:	Your GenItemGroup object.</P>
<P CLASS="refField">
Destination:	Destination of your GenItemGroup.</P>
<P CLASS="refField">
Parameters:	<EM>
selection</EM>
	The current selection of the GenItemGroup.</P>
<DL>
<DT>
<EM>
numSelections</EM>
</DT><DD>The current number of selections of the GenItemGroup.</DD>
<DT>
<EM>
stateFlags</EM>
</DT><DD>The current state flags of the GenItemGroup.</DD>
</DL>
<P CLASS="refField">
Return:	Nothing.</P>


<H4 CLASS="