CVS, Canvas 3 Drawing File (.cvs)
The CVS Vector image file format
The CVS file extension was used in early versions of the drawing program Canvas. Canvas is used for creating and designing technical illustrations. Even though the original program is, by now, deprecated and not supported by modern Mac computers anymore, the files can still be viewed today.
Technical details of CVS files
CVS is a proprietary image format used in Canvas. This image file can contain both raster and vector image information used for technical graphics and illustrations.