Yes, it was a work system written in Perl. I don't have the code available to me right now though because I'm at home.
Early versions of Windows did not have a similar concept to Unix's process groups ... and so applications such as Visual Studio rolled their own complex custom schemes to achieve a similar effect. This was remedied with the introduction of Jobs in Windows 2000. The Win32::Job module (comes with ActivePerl, needs Windows 2000 and above) should be a suitable replacement for Unix process groups.
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