Sure. I'll leave it to Corinne to talk about the guts of the process.
The reason for doing it this way is that before, Corinne and I, not to make it personal, but as the CIO and the minister, we're constantly encouraging departments to publish more. Some departments put their shoulder to the wheel and were doing that. For other departments, it just wasn't a priority, or they were up to their eyeballs in alligators or whatever was going on, and they weren't responding to the extent that we thought they should be capable of.
Having the open data by default puts the onus on them. They have to publish unless they can convince in a process that it is a violation of public policy or some other legal requirement.
Corinne.