"Those commands are designed to interface with a computer - they are not compatable with each other if you're trying to do it calc to calc." (BradN)
"If you want to use them to communicate with the pc, check my website (
http://users.pandora.be/gp/casio/). Check the section CasioIO or Information (you can also figure out why it doesn't with that information) For communication between 2 calcs, you can't use send() or receive(), indeed." (GP Productions)
We really should put our faq back up. Consult your manual for the parameters, but the above answers should be enough to turn down your interest.