FINISH:

ADD:
	make character sort() vector function.

	expm(), logm(), sqrtm(), schur()

	Add-op for string matrices.

	Readline help file

	Enhance eig() help file.

	Make [fps]rintf() recognize %m (matrix)

	static declaration for functions.
	
	Make using system() easier.

	Use termcap

Start thinking about:

	Make the parser/machine completely re-entrant.

	ReDo if, for, while, use jmps instead.

	Interactive debugging

	Consider an eval function...

	Write my own scanner (flex is driving me nuts).

	Sparse matrices
