From the introduction: [Actual Dungeon Mastering: How to Design Dungeons] is an analysis on dungeon design which cumulates with a comprehensive procedure to make OSR dungeons based on the original TSR principles. OSR dungeons are designed for games that are about physically exploring a dangerous location, and the original TSR principles of dungeon design incentivize exploring the dungeon. The same principles detailed regarding dungeon design are then expanded upon in creating the wilderness.