-
-# This program originally required input in terms of a (clock)
-# direction and distance. Somewhere in history, it was changed to
-# cartesian coordinates. So we need to convert. Probably
-# "manual" input should still be done this way -- it's a real
-# pain if the computer isn't working! Manual mode is still confusing
-# because it involves giving x and y motions, yet the coordinates
-# are always displayed y - x, where +y is downward!