FILE PURPOSE Makefile Ignore if not a programmer. md5 Ignore if not a programmer. Readme This file. Not called README else apache doesnt list it. testblock.1 Source of manual, un-formatted. Ignore if not a programmer. testblock.c Source of program. Ignore if not a programmer. testblock.man Manual, pre-formatted read it. For non Unix systems. testblock_32bit.exe Program to run on Microsoft, built by garyj on cygnus. Gary expects this will run on 32 & 64 bit versions of MS Windows 7 & 8. testblock.exe A symbolic link to testblock_32bit.exe (In case user does not know how to move file to .exe, & or in case Microsoft fails to start if name ends _32bit.exe ) I have set the executable attribute of the .exe files, in case it helps. After download I presume you will first need to open a DosBox or whatever Microsoft now calls their Windows interface to their command.com or command.exe CLI (Command Line Interpreter).