Folkinfo does offer the choice of leaving the abc alone or replacing it with the transposed abc. This is achieved, believe it or not by checking or unchecking the replace abc checkbox.

I'm a bit mystified Jack finds counting semitones so difficult!!! He can loose me on far more complicated aspects of music such as modes without even trying. Still. I guess I can add something to make the counting easier and I can look into the possibility of a "to" if there really is a need.

I will look into the abc shorthand notation ($lt; $gt;). Currently the preference (yes abc2midi can work which way you want it) needs to be set in the abc (%%MIDI ratio n m) so we are not restricting either approach.