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Roof. --> ..

Floor(textureOffset)should be on line 491 ( CE 2012 Paris Example, paris.cga ) :
Floor(textureOffset) -->
case !LOD_HIGH : Floor. # lores floor
case comp.sel == "back": Floor. # lores floor on the back
case textureOffset == 0: GroundFloor. # no hires for groundfloors
else :
split(y){~Floor_Height : FloorDetails(floorindex(textureOffset))}* # split repeated mid floors again for High LOD
Floor(textureOffset) -->
case !LOD_HIGH : Floor. # lores floor
case comp.sel == "back": split(y){~Floor_Height : FloorDetails(floorindex(textureOffset))}* # split repeated mid floors again for High LOD # lores floor on the back
case textureOffset == 0: GroundFloor. # no hires for groundfloors
else :
split(y){~Floor_Height : FloorDetails(floorindex(textureOffset))}* # split repeated mid floors again for High LOD