CA> as far as os/2 is concerned and afaik you can only access whole files.

DosSetFileLocks will lock and unlock ranges within a file.

 CA> ibms os/400 for example should allow what you want to do, but os/2 is
 CA> no   multiuser-system and lacks the support for record oriented file
 CA> access and   locking mechanisms, afaik...


Locaks are required for any multi-process OS as well as multi-user. Any OS
the supports LAN access must have file locks for database queries.

Carl

--- FleetStreet 1.10 NR