&gt; &gt; There's a pattern here.
&gt; &gt;
&gt; &gt; Jon Awbrey
&gt; &gt;
&gt; &gt; ¤~~~~~~~~~¤~~~~~~~~~¤~~~~~~~~~¤~~~~~~~~~¤~~~~~~~~~¤
&gt; &gt;
&gt; 
&gt; MW:  Yes, there is a pattern in the examples you have given,
&gt; but it does not always hold.  It is quite common to see
&gt; a pattern of the sort:
&gt; 
&gt; "&lt;x, y&gt;"               denotes x in the real world or
&gt; "&lt;a, b, c, d, e, f&gt;"   denotes a in the real world
&gt; 
&gt; It is perhaps worth remembering that this discussion
&