So I just found a fun one.
If you enable SELCALL ENCODE, but not SELCALL DECODE, one of the
configuration screens has the entry items for both, but the DECODE ones
will all say N/A. But it turns out that if you hit the arrow key, the
values for at least the horn and lights timers actually change, even
though you don't see them.
This could lead to confusion when diffing code plug patterns, so watch
out!
De