4.2.12 GROUP Files

This format is obsolete, but is still accepted. It combined the functions of INST and TLIST, taking a series of transformations and a single Geom (unit) object, and replicating the object under each transformation.

     GROUP ... < matrices > ... unit { oogl-object }

is still accepted and effectively translated into

     INST
     	transforms { TLIST ... <matrices> ... }
     	unit { oogl-object }