Current questions and answers regarding the map editor.

How to expand the green zone for a town? It's easy: select the town, click on Shared -> ... -> ActiveTiles in the left panel (add the active tiles there), then BlockedTiles (you need to exclude the tiles that you specified in ActiveTiles). The downside is that the tile situation will be the same for all towns of this type (not just on this map). As for transparent caravans, I'm not sure... If they have an object defined in Shared, the same method will work for them (but this time, you need to remove all tiles, both active and blocked).