• 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