I would say the costing is not yet precise.
This is from lessons learned from all of the projects that we've done here. Once we have the Centre Block emptied, the key thing is to start pulling it apart, by opening up the walls, the ceilings, the floors and really getting in there and having a really good look at what is behind there. We have a good understanding of the facility, but we need to have a really good understanding.
That and detailing the functional requirements will inform a final scope, and then a final cost, and a schedule. We anticipate having that baseline scope, budget, and schedule in 2019-20. Of course, we'll be doing work in parallel, so we have initial funding to move us along and then we will be locking that down over the next couple of years.