Nicholas Bodley wrote:

>First new one in many whiles, called "commat": @.
>Google on [commat morse code new], and pick a nice one.
>It's [di dah dah di dah], according to one "hit".
>It's "stale news", but I thought it might be of some interest to Qalamites.
It's new to me, and I once was into this, to get an amateur radio
license. Thanks...

>Fwiw, an obsolete variety of Morse code once used in the USA included
>spaces within the dits and dahs of a few letters; those spaces were longer
>than between dits and dahs, and shorter than between letters, afaik.
I believe it also had other lengths of dahs.