Rendered from the game's real floor, wall and decoration tiles for this template. Edges without a wall are doorways where corridors connect this room to its neighbours. Monster, item and NPC spawn points are not shown.
Each floor of the region draws from a pool of Event room templates. "Chance per slot" is this template's share of that draw whenever a Event room is placed on that floor, weighted by template weight. A single floor can hold several room slots, and how many depends on the floor layout (not yet extracted), so this is the per-slot pick chance, not the whole-floor chance.