Issue 1 was from a previous draft that I forgot to delete.

Agree about Issue 3.

 > Gambit

I looked at the manual and the source, and Gambit doesn't expose enough
of it's readtable API to client code to do this.

 > Racket

Will note.

Good point about the implementation, I will move it to a separate file
in the next draft.

-- Peter McGoron