RUB DRB LDB (the spaces are for readability only).

Remember that this is for the "edges without corners and without centers"
case. Hence, the edges are all flipped and are all properly configured
with respect to each other, but they are not flipped "in place" with
respect to a fixed coordinate system of centers. They are rotated with
respect a fixed coordinate system of centers.

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Robert G. Bryan (Jerry Bryan)              (304) 293-5192
Associate Director, WVNET                  (304) 293-5540 fax
837 Chestnut Ridge Road                     BRYAN@WVNVM
Morgantown, WV 26505                        BRYAN@WVNVM.WVNET.EDU

If you don't have time to do it right today, what makes you think you are
going to have time to do it over again tomorrow?