[PowerWyrm]

Concerning the last point, I changed how custom walls are generated after looking at Abandoned Manor in Tangaria and seeing all those portraits and other silly features embedded into rock.

1) the "wall" line is now only used for walls that are not surrounded by 8 other walls (mainly for walls that delimit rooms and corridors)

2) for the other walls, a new "fill" line has been added that is used exactly the same way; if no "fill" line exists for a dungeon, corresponding "wall" lines are used

For custom dungeons, it is fine to have dozens of "wall" lines to improve the "look" of the dungeon from the player's perspective, but the number of "fill" lines should be kept minimal, and optimally should be 1.