This program was published in PC Magazine, 29 Sep 87, pp. 339 ff.
It permits direct, two-key entry of most high-bit ASCII characters.
The display of characters is activated by Alt-Spacebar, and is
eliminated by ESC.  The display toggles with num-lock and scroll-lock,
which also activate the entry of the additional characters.  The num-lock
and scroll-lock functions are retained through the use of the shift
key with num/scroll-lock.  Full documentation is in the magazine.

As published, it worked only for a single-display system.  Since 
many (??at least a few) of us have dual systems, with a mono monitor
together with either a cga or ega, a few changes were needed to get
the program to function in this latter environment.  The program
kbxdual.asm/com represents these changes to the original.

  The .ASM file documents the changes, while retaining the entirety 
of the original program, for those who want to return to from whence
it came.  The program has been tested in both of the above noted dual
display systems.  While I expect it to work also in single-display
systems, it has not been fully tested in that environment; the tests
that were run worked.

  Further test reports will be welcome, addressed to Bob Thompson on
Gene Plantz BBS in Chicago, 312-885-2303.

  Enjoy.

(Revised as KBXDUAL2.ARC, corrected code in init2:)
                                Bob Thompson