- all_inventory
- children
- clone_object
- clonep
- deep_inventory
- destruct
- environment
- file_name
- find_object
- first_inventory
- load_object
- master
- move_object
- new
- next_inventory
- objectp
- objects
- present
- query_heart_beat
- reload_object
- restore_object
- save_object
- set_heart_beat
- set_hide
- tell_object
- tell_room
- virtualp