I DL this, object, last night at home and don’t have access to it right now. Anyway the Object (jeep) is made up of many individual smaller objects. IE axles, wheels, windscreen wipers ect. This is so you can control the individual colours and materials. These objects can be turned on an off at your convenience.
IF you DL a student version of ArchCAD then you can do what you need to do. I think the model is specifically made for ArchCAD if not possible search for a program to view .GDL objects.
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