Opens a heap.
call "CBL_OPEN_VFILE" using     heap-id
                                status-word
                      returning status-code 
               	 | Using call prototype (see Key) | Picture | |
|---|---|---|
| heap-id | cblt-vfile-handle. | pic x(2) comp-5. | 
| status-word | cblt-vfile-status. | pic x(2) comp-x. | 
| status-code | See Library Routines - Key. | 
None