On 10/9/2021 12:47 PM, Stephen Hoffman wrote: > C and DLM already implement range locking on OpenVMS. I'd really like to see the documentation and how to use it. -- David Froble Tel: 724-529-0450 Dave Froble Enterprises, Inc. E-Mail: davef at tsoft-inc.com DFE Ultralights, Inc. 170 Grimplin Road Vanderbilt, PA 15486