To do
-----

0.	Bugfixes.
0.	Overflow checking for *_proc, atol and others.
0.	API.
0.	Update `messages.de'.
1.	Improve command line parsing.
2.	Rewrite div_proc, mod_proc.  May be rewrite shr_proc, shl_proc,
	sar_proc too?
2.	Optimization.
3.	Fixed (floating?) point arithmetic.
3.	Internationalization.
3.	Support for text video modes in NANSI.SYS way (see description
	of /Tnn switch in NANSI.DOC) ?

Done
----

0.	Output results to keyboard buffer. (v0.2.0)

