call "CBL_MUTEX_OPEN_INTRA" using by reference mutex-handle
                            by value           open-flags 
               	 | Using call prototype (see Key) | Picture | |
|---|---|---|
| mutex-handle | cblt-pointer. | usage pointer. | 
| open-flags | cblt-os-flags. | pic x(4) comp-5 or pic x(8) comp-5 (64-bit native programs only) | 
| 0 | Mutex is not acquired by the current thread at creation. | 
| 1 | Mutex is acquired by the current thread at creation. | 
Comments:
mutex-handle is local to the process.