Board Thread:Support Requests - Getting Technical/@comment-3207544-20130125021043/@comment-5209426-20130126224121

It looks like that page might be technically correct (the best kind of correct :) ); it is actually speaking more narrowly then it seems because of the way it's been written. What it says is that  is deprecated on   elements. That is true; however,   is still standard on   elements. Their page on  s does not mention deprecations. It's poorly written though, it really should say "scope is not not valid on TD in HTML5, it is only permitted on TH".