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This format is obsolete, but is still accepted.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 }