Breakdown structures 
Revision log
| Date | Revision description |
| 2022-04-12 | Simplified, leaving the core information |
| 2017-07-09 | Added actual RDL class identifiers; some minor corrections |
| 2015-12-18 | Removed references to ISO 15926-4 XXXXX classes; changed Stream Function to Stream Inlet Function & Outlet Function. |
| 2015-09-20 | First issue |