+race between cdu off (due to watchdog or short) and points
+
+
layout polarity diagram colourful segment encoding:
- wire layout diagram thing into Tcl and see speed etc.
make moveable feature selection in subseg2display bitwise rather than
setwise
- fix points on A5 and A6 so that J points are separate from M points
-1. Write lots and lots and lots of PIC programs
+safety system no crashes at crossovers please