triple_wallpipe_entrance_b
elevator_roof_collar_glass
glados_screenborder_curve
debris_blacktile_cluster01
rail_horizontal_straight_128
debris_dest_phys_01_tiles
glados_wheatley_boss_animation
glados_wheatley_boss_screen
backpanels_color01_nospec
concrete_modular_floor001e
observation_tilefloor003a
observation_tileceiling001a