N ^ Index /|\ ------- | D: door | Su: stairs going up | Sd: stairs going down _ Su (to 2nd level) _/ \_ | | / \| | | D | _________\_ _/D | | _________D_D | | | | |___| | | | | | | | | | | | _________| | |_| _______ | | | | | | | ___| | | |_ | |--- | | |_ | _| |_ _______