efine a method <B>--default-operation</B>
which is forwarded to the default operation of the slot (thus, for the class
&#8220;<B><A HREF="variable.html">variable</A></B>&#8221;
slot, this is forwarded to
&#8220;<B>my -append</B>&#8221;),
and these methods which provide the implementation interface:
<P>
<DL class="slot implementation">
<DT><A NAME="M36"><I>slot</I> <B>Get</B></A><DD>
Returns a list that is the current contents of the slot. This method must
always be called from a stack frame created by a cal