 be designated by the same collection
of cell coordinates:  &quot;c r&quot;, &quot;c (r)&quot;, &quot;(c) r&quot;, &quot;(c)(r)&quot;.  The only
difference between LOC's is in the arbitrary choice of one of these
four as the anchor point, base point, or bottom element.  Figure 7
shows the LOC for the universe [c, r] at the base point (c)(r).

o-----------------------------------------------------------o
|                                                           |
|                            c r           