This technote explains the relationship between .TRV and .DRV files in TPC Desktop. This topic is obsolete in Version 2008 and later in which the drawings are stored in the TRV file.
Prior to Version 2008, Traverse PC Desktop stored drawings in a separate file with a DRV extension. If your TRV file is called "job1.trv" your drawing file was called "job1.drv"
If you have TPC files prior to Version 2008 that you want to send to someone else with Traverse PC Desktop for Windows and you want them to be able to access your drawings, you will need to send both the TRV and DRV files.
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