APL System			Copyright (c) 1996,1997 Bernd-Gunter Nitzler

List of things to do:

- test all the functions more thoroughly

- correct the MATDIV, it runs not as expected

- rewrite the statement interpreter, there are some quirks with the three
  different stacks

- change the function stack (status indicator) to be a class

- implement a full windowing system for DOS

- implement all Quad functions

- implement all Auxiliary processors

- create an interface to C or any other language

- write a Windows interface

- use a better memory allocation scheme, like quickcells and buddy-system

- use a true bit list for boolean values, currently a bit is a byte

- go step by step to APL2

- have to look after multibyte characters, in APL2 exists 2 byte chars!!!

- optimize "befreie" and "ordne_zu" combinations if the new value has the
  same type and rank or type and count. There is no new allocation and
  copying of the values necessary in that cases.

- look after all that SYNTAX_ERRORs and change them to the correct error type
