 As "Gould CSD" (Computer System Division) then introduced the UTX-32 Unix-based OS that included both BSD and System V characteristics.At a time when there was a "religious war" between BSD and System V advocates, Gould developed this "dual universe" system that contained nearly all of the features of both BSD 4.2 and System V.4.The user made the selection of which environment would be used by setting a few shell variables.