- o -
- on_blackboard_event : playerc_blackboard
- orientation : player_actarray_actuatorgeom , player_imu_data_euler , player_limb_data , player_limb_setpose_cmd
- origin : player_coopobject_header , player_map_info , playerc_coopobject_t , playerc_map_t
- outer_size : player_gripper_geom
- overflow_count : _playerc_client_t