*	Factorial function, parallel resistors function, nPr, nCr, various
	bitwise operators.

*	Other bases (binary,octal,hex,[arbitary?])

*	More constants? Constants -> read-only variables

*	Handle translated commands, allowing the original and the
	translation in all cases.

*	Implement tab completion (ie fill in the two functions at the top of
	console.c)

*	Convert the docs to docbook

*	Handle two rCalc's running more nicely (presently the last one to
	close will overwrite any variables saved by the first one).

*	Trap CTRL-S and CTRL-Q to avoid confusion.
