I hadn't thought about its use for the handicapped. I had originally intended to use the script as a plugin for XChat to allow the use of a keyer instead of a keyboard for text. This way I could practice morse code without having to use practice drills which are really just repetitive quizzes. Morse code is like a very simple language and practicing in this manner can greatly speed learning (for me anyway). I hadn't considered using the serial port. That might be a better option given that using an audio waveform is more troublesome.