@erikescudero The print dialog box used to say that a part may need support and there was a "button" on it to bring up the generate support dialog box that the little icon you are referring brings up also. I just found it handy to be told (as a reminder) if I brought in a part that MatterControl thought needed support. The reminder is what I am talking about. The button that I dismissed was not actually the final generate support dialog box, but it did bring it up.
I hit the dismiss button and I would like to bring back the reminder, but I can't find it. I have two computers running six printers and I like to have each system behave the same way.