>>-----set lock_mode=---.-0-.-----------><
                        +-1-+
                        +-2-+
                         
               	 | 0 | Uses the locking mechanism provided by Micro Focus COBOL V3.1 and earlier versions. | 
| 1 | Provides compatibility with DOS and OS/2 locking mechanisms. | 
| 2 | Provides interlanguage locking. This method causes record locks to lock the physical record. | 
| Default: | 1 | 
| IDE equivalent: | None | 
Comments:
This tunable is only applicable if the File Handler configuration option FILEMAXSIZE is set to 4.