Would it be right to open 210test, delete every map, make your own quest using the tiles, and save it under a new name? (I'm not saying I did that. I just want to know if it's allowed. Also, when I say "make a new quest", I mean make one that is NOT like 210test in ANY way, except for the tiles.)
2.10test tiles
yep, that's how a lot of people get started.
Oh, so I CAN delete 210test's maps and make my own quest with the tiles? Cool! I think I'll do that!
Or you could just export everything and start with a fresh slate. Then import those exported files into it. Does the same thing, but saves time.
Actually by doing edit and delete all maps already makes thing better and faster however for the full tileset use pure tileset it has everything and more then the 2.10 test sets.