ation named <B>default</B> (and vice versa), which has the behaviour of not
display any bitmap operation. For all type, if the modifier <B>none</B> is not given, it is
automatically associated to the <B>default</B> sub operation of a <B>copy</B> base operation.
<LI><B>program</B> to specifies a sub operation accessible only by <B>DropSite::setoperation</B>.
<LI>A list combining <B>shift</B>, <B>control</B> and <B>alt</B>, which means their 
corresponding key.
</UL>

</DD>
</DL>
</DD></DL>
<DL><DT><A NAME="s