Frequent readers may recall that I had implemented CLOCKSS support in OJS. I'm sad to say that the original commit was flawed and it was decided that the best thing to do was to revert it, the reason being that there was no selective option to turn off the CLOCKSS manifest. Anyway, after extensive work, I've re-done the patch so that OJS has fully customizable CLOCKSS support that can be enabled and disabled independently from LOCKSS.