-* The remaining shared globals: WD1, WD1X, WD2, WD2X. These are used
- rather promiscuously to pass around information that ought to be function
- arguments in a modern language.
-
-* Remaining unstructured gotos in playermove() and do_command(). The goto L12
- in playermove() is particularly horrible, jumping backwards into the
- middle of a loop.