• extra : of_fast_enumeration_state_t
• height : of_dimension_t
• itemsPtr : of_fast_enumeration_state_t
• length : of_range_t
• location : of_range_t
• mutationsPtr : of_fast_enumeration_state_t
• next : of_list_object_t
• object : of_list_object_t
• origin : of_rectangle_t
• previous : of_list_object_t
• size : of_rectangle_t
• state : of_fast_enumeration_state_t
• width : of_dimension_t
• x : of_point_t
• y : of_point_t