From: Kyotaro Horiguchi <horikyota.ntt@gmail.com>
> It's better to be short as far as it is clear enough. Actually '<' to
> 'F' and '>' to 'B' is clear enough to me. So I don't need a longer
> notation.
Agreed, because the message format description in the PG manual uses F and B.
Regards
Takayuki Tsunakawa