Kevin Pacey wrote on Tue, Feb 2, 2016 09:00 AM UTC:
Hi Charles
I've read parts of the Game Courier documentation (much of which is
applicable to the Diagram Designer, from where the documentation can also
be accessed). The part that's devoted to FEN notation, I seem to recall,
mentions handling piece images that use multiple letters to be represented
in the FEN string. For a single piece that uses multiple letters, e.g. for
a (White) "Rocket" it could be represented in FEN in a piece set by RK;
simply use {RK} instead of entering a single letter (if you actually could)
in the FEN string for the chosen piece type. Hopefully an editor will help
if I'm not clear on this.
Kevin