The file you are now reading is 9906INDX.TXT.  It lists and
describes each file in this directory.

The files 99NDCOL1.COD and 99NDCOL2.COD contain the Listing 1
and Listing 2 source code published in the Nov/Dec 1999
Computer Column of _The Cryptogram_.  These source code files
are not executable as they stand.  They must be separately merged
with the Mar/Apr Program 1: pattern search demo.

99NDCOL1.BAS and 99NDCOL2.BAS are the complete numeric key and
tridigital/keyphrase search programs formed by this merging.
To execute them, use the QBasic interpreter.

The file 99ISSU06.ZIP contains the files in this directory.  
The .ZIP was created under MS-DOS and the text files are in 
DOS ascii text format.