Does a good reference exist someplace detailing how to use the Constraint Manager Design for Fabrication Mask constraints that showed up in 17.2-2016 Hotfix 25? I have created a DFFMaskCset, created a Mask subgroup that selects all of the soldermask subclasses (PkgGeo, BrdGeo, pin, & via) and applied the CSet to it, and I have enabled the Mask analysis modes. When I run DRC, I get no errors related to the soldermask, even when I set the Slivers and Islands values to something ludicrous like 100mil. The What's New in the Hotfix doc doesn't offer any wisdom beyond a little description of each setting.
Many thanks.