The files in this directory (like MSYS.DO) are to be used as examples of the
kind of statements you can put in each. DO NOT ATTEMPT TO USE THEM DIRECTLY!
They contain statements that will NOT be appropriate for your system. When
making your own versions of these files, I have two suggestions: (1) Keep
them as simple as possible at first, and (2) if you don't fully understand
some statement, don't put it in your file!