There have been a couple of folks on Twitter that don't think editing is supported because there is no visual indicator (other than a blinking cursor). We should consider some focus ring or other visual indication editing is allowed. https://twitter.com/joelgoodman/status/393050831567593472 https://twitter.com/shaunandrews/status/393067519478480896
<rdar://problem/15300576>
Is this still a concern? I think that having the checkboxes appear or the lock icon be visible are indicative enough.
At this point, I think everyone assumes all devtools have live editing for rules. Let's close this.