iOS 8 Xcode 6: What's the point of the grayed out constraints?

Question

In the Xcode 6 betas, when I delete a constraint, it doesn\'t remove it completely, but grays it out. I thought that was to imply that the constraint was used in a different

Answer 1

You can not delete grayed out constraints from the right hand Size Inspector (which is where I normally delete constraints because it's much easier to ascertain which view the constraints are for, it get's really confusing in the Document Outline), but you can delete the same grayed out constraints from the Document Outline on the left by selecting them and hitting the delete button.

Example of grayed out constraint (see height):

Note: To make the Document Outline's constraints easier to digest, I first delete them from the Size Inspector, which grays them out, then delete the newly grayed out constraint from the Size Inspector. Just FYI.