Look for a dashed outline of the required volume while you move them. Some items need to occupy space behind the surface they are mounted to.Use the mouse scroll wheel to zoom in and out.Rapidly duplicate puzzle items by holding down C while moving them.Rotate the camera view up to work on the ceiling.Use the controls along the far right edge of the editor window to pan, zoom, and rotate your camera view.
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Press P to change portalability of selected surfaces.Use the + and - keys to quickly modify selected chamber surfaces.They can be moved, but they cannot be deleted or duplicated. The entry door, exit door, and large observation room are mandatory items.Right click an item to change its properties or connect items together.Move the mouse to the far left edge of the screen to open the puzzle item palette.Press and drag the background to rotate your camera view.Drag the boundary edge of a selection to move the highlighted surfaces.Right click selections to change surface portalability.Click and drag across several surfaces to block-select.Click a chamber surface tile to select it.These items are exclusively featured in the Portal 2 - Educational Version. These are the mandatory items are placed in the chamber, and can only be moved. space+ - Pushes/pulls surface if selected.alt+ - Places an item on the surface opposite to the one facing the camera.c+ - Duplicates an item (does not duplicate any connections).⇧ Shift+ - Allows for batch selection of surfaces.Delete/ ← Backspace - Delete selection.- Click: Controls camera rotation Scroll: Controls camera zoom (follows cursor).- On background: Pans camera view On chamber: Context menu.Selecting and dragging the lower-right corner controls the camera rotation.Selecting and dragging the right edge controls the camera zoom.Selecting and dragging the upper-right corner pans the camera view.The top edge of the screen features four buttons: "Build and play puzzle", "Undo", "Redo", and "Switch to game view".Hovering the mouse over the left screen edge displays the item list.The Puzzle Creator features a stylised representation of the test chamber being worked on featuring a simplified, bright, and flat color palette, and models and textures lack the level of detail that they would have in-game. The "Puzzle Creator" does not appear to have a single official name Valve published a blog post on the Octoreferring to the editor as the "Puzzle Creator", later referred to it on the blog post of Apas "Puzzle Maker" and simply calling it "Editor" in-game. It has a plan there too, it comes in the form of a simplified level editor a Photoshop for test chambers".
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The editor was first mentioned within The Final Hours of Portal 2, " Valve figures out how to make designing Portal 2 maps an easier process.