+# cb, ce and ck are desirable on most crt's. The non-crt entries need to
+# be changed to turn them off (cb@:ce@:ck@:).
+#
+# Parity defaults to even. There ought to be more alternative entries with
+# no parity. The Pc entry already has no parity.. The different parities
+# are:
+# (none): same as even except -inpck instead of inpck for login.
+# ep: getty will use raw mode (cs8 -parenb) (unless rw is set) and
+# fake parity. login will use even parity (cs7 parenb -parodd).
+# op: same as ep except odd parity (cs7 parenb parodd) for login.
+# op overrides ep.
+# ap: same as ep except -inpck instead of inpck for login.
+# ap overrides op and ep.
+# np: 1. don't fake parity in getty. The fake parity garbles
+# characters on non-terminals (like pccons) that don't
+# support parity. It would probably better for getty not to
+# try to fake parity. It could just use cbreak mode so as
+# as not to force cs8 and let the hardware handle the parity.
+# login has to be rely on the hardware anyway.
+# 2. set PASS8, giving cs8 -parenb -istrip -inpck.
+# np:ep: same as np except inpck.
+# np:op: same as np:ep except for parodd (but parodd is overridden).
+# np:ap: same as np except istrip.
+#