HEXIFY transforms an 8-bit CP/M .COM filC-DEC-20
to a 7-bit CP/M printable .HEX file, suitable for downloading to machines
that can't do binary file transfers.  The result can be transformed back
to a runnable .COM file on the CP/M system by running it through LOAD.

To hexify a .COM file, for instance FOO.COM, just type "hexify foo" (or
whatever the filename is) in response topt.
