a recent Press Association release) was added to Morse code by the ITU in
December. @ was previously used for the SK prosign, which is now spelt &.
Obtained from: http://en.wikipedia.org/wiki/Morse_code
Avoid using parenthesis enclosure macros (.Pq and .Po/.Pc) with plain text.
Not only this slows down the mdoc(7) processing significantly, but it also
has an undesired (in this case) effect of disabling hyphenation within the
entire enclosed block.
