It is convenient to create 2 or 3 false divisions like Water, Frontier and Coast and set them with the ignore tag set to yes. Do n't forget not to set color for any Frontier 0,0,0 in RGB. Please make it something like 1,1,1 so that a border outline comes while placing any division on the map.
És convenient crear 2 o 3 zones falses amb el Water (mar), Frontier (frontera) i Coast (costa) establint l' etiqueta ignore a yes.