[dagmx]

Sure, but I would argue it's a poor system that is setup to require serial editing to a non diffable file.

Again, I'm not saying locking is an invalid solution. It is. But to me, it's often (but not always), a crutch for a deeper issue.

That binary file should be set up to be modular if it is intended to have areas that multiple users can touch without directly affecting each other.