Quote: "It makes no difference to the code, but for people like me who like things in order, it's needed that way."
Me likewise.
Actually, it might make a difference if one file is simply intended to be a continuation of the previous one. No idea whether that is possible though. I'll leave that as "an exercise for the reader".
I didn't even know till looking into this query that you could simply move the tabs. If you need to change the file that DBPro thinks is the main file, just open the Solution explorer pane on the left and right click the file you want as the main file. Should be obvious from there.
Quote: "Does that really work?"
Apparently. Try it.