1) In the Initialization Data, what is the tab "DMap Items" for? I see a whole lotta check boxes labeled "M", "C", and "B", but don't know what any of it is.

2) In some people's quests (Freedom's Link to Tortuga), it's mentioned that you can return to places, like a town, after beating a dungeon, and the things people say will be different. Is this just some complex trick with a bunch of tile warping, or is there actually a way to change data on one screen from a different screen via some sort of trigger, like defeating the boss of a dungeon?

There's a chance the two of these are linked somehow, but I don't want to muck around and learn these things the hard way. Help would be much appreciated. :)