The grey represents what material you want to make it out of and (not including floors) is approx. 40 stacks of material for an 10 block high, one floor castle.
You can edit or add to the castle however you like, especially since there is a large amount of unused space.
30 stacks of wall material, 13 stacks of floor material per level, 19 stacks of ceiling material, and 14 doors.

Blackball and former Robert Tyre Jones design hydroplanes in Gold Cup racing in the Jones plans were made useable exempt of explosive charge to Australian powerboat racers. Chassis Kit project Templates In Adobe PDF Format that give the axe be printed on a Home Printer.

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