> ## Documentation Index > Fetch the complete documentation index at: https://editor.pascal.app/docs/llms.txt > Use this file to discover all available pages before exploring further. # Floors and levels > Stack levels into multi-storey buildings, switch between them, and shape floor slabs and ceilings — created automatically from your walls or drawn by hand. A Pascal building is organized into levels — one per storey. Each level holds its own walls, floors, ceilings, and items, and Pascal creates floor slabs and ceilings for you whenever your walls enclose a room. ## Levels Every scene starts with a single level named **Ground Floor**. Levels you add above it are named **Floor 1**, **Floor 2**, and so on; levels below become **Basement 1**, **Basement 2**. A level is 2.5 m tall by default and grows automatically if you raise its walls or ceilings. ## Manage levels The level selector floats at the top left of the canvas. From there you can: * **Add a level** with the `+` buttons above and below the list, or insert one between two existing levels. * **Rename** a level by double-clicking its name — `Enter` saves, `Esc` cancels. * **Reorder** levels by dragging the grip handle on a row. * **Duplicate** a level from its `⋯` menu — **Duplicate level** copies everything, and **Duplicate with options...** lets you pick what comes along. * **Delete** a level from the same menu. You'll be asked to confirm, since all walls, floors, and objects on that level are removed with it. The ground floor can't be deleted. Level selector panel with add, duplicate, and delete controls ## Switch between levels Click a level in the selector to make it active — new walls and items go onto the active level. `Cmd/Ctrl + ↑` and `Cmd/Ctrl + ↓` step up and down through the building. How the other levels look is controlled by the levels toggle in the toolbar, which cycles through three view modes: * **Stacked** — the default; all levels sit at their true heights. * **Exploded** — levels spread apart vertically so you can see into each one. * **Solo** — only the active level is visible. Cycling level view modes on a two-storey building ## Floors Floors are slabs, and most of the time you don't draw them: the moment your walls enclose a room, Pascal detects the space and generates its floor slab (and ceiling) automatically. The auto floor keeps tracking your walls as you edit them. To draw a floor yourself — a terrace, a landing, a slab that doesn't follow the walls — use the **Slab** tool in the Build tab: 1. Click to place each corner of the outline. 2. Finish by clicking back on the first point, double-clicking, or pressing `Enter` (the outline needs at least three points). `Esc` cancels. Tracing a floor slab outline in Pascal Select a slab to edit it. The properties panel shows its area and a **Height** slider with quick presets — **Sunken (-15cm)**, **Ground (0m)**, **Raised (+5cm)**, and **Step (+15cm)** — plus an **Add Hole** control for cutting openings into the slab. Holes that Pascal cut automatically (for stairs and elevators) are marked **Auto** and manage themselves. Slab surfaces are painted with the **Painting** tool — see [Materials and paint](/items/materials-and-paint). ## Ceilings Ceilings work like slabs: auto-generated for enclosed rooms, or drawn with the **Ceiling** tool using the same outline tracing. A selected ceiling has a **Height** slider with **Low (2.4m)**, **Standard (2.5m)**, and **High (3.0m)** presets, and supports holes the same way slabs do. ## Stairs To connect levels, use the **Stairs** tool in the Build tab: click to place the staircase footprint, rotating it with `R` and `T` before you commit. Pascal cuts the matching opening in the floor slab above automatically.