Send("SET LIGHT ON
Send("SET LIGHT OFF
Send("SET SOUND Fto try to send a sound of frequency F. This doesn't work--it doesn't know about the variables on the calculator. This was fixed with
Send("SET SOUND eval(F. And I had a chromatic scale playing:
Send("SET SOUND eval(F
rand(999or a For-loop, just use this, if you want to have a delay in your program, for example when displaying text, and let the user read it.