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A five-line batch file is all that's needed to set up the specific
environment variables for an application you're writing. Supposing your
source is in mysource off artful, your data is in mydata off artful, and
you have a 1-meg ramdisk on h:, you would write a batch file called, say,
setmyapp.bat, in artful\bat:

     @echo off
     set tmp=h:\
     call setaa
     set appdir=%artdir%\mysource
     set artdat=%artdir%\mydata