checking device terminals in "extresist", leading to incorrect
assignments for devices with only 3 terminals, or for asymmetric
FETs. Corrected "select area label" which had stopped working from
a handful of commits back when the "select" command was corrected for
visible/invisible labels and cells. Corrected the "extresist mindelay"
command option parsing, which was not allowing mindelay to be set to 0.