And if 3 or 4 sites want to use Counter-Argument-To amongst
themselves for a very special purpose and make it
X-Counter-Argument-To, and then it does catch on worldwide because
slowly 500 sites and 10 MUA writers all implement it, we are again
stuck with a non-standardizable field name because they decided to
start it with an X.
let's get over that. if someone creates an X- field that is
really worthy of standardization as-is, let's standardize it.
but let's not deprecate X- just for the rare case that this actually
happens.
Keith