Panels
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Panels are the building blocks of the Aperture Science facilities. With the ability to be placed anywhere and shifted at any angle and height, they are capable of near-infinite designs. This makes Panels an ideal choice when it comes to constructing test chambers, allowing those in charge to create tests on a whim. Panels come in a variety of forms and functions, from lifting the player to obstructing the player from completing their goal.
Function
Panels are capable of aiding or impeding the player's completion of the task at hand. Sometimes panels can be activated via buttons, which will either add or remove panels to the player's path. Panels can be applied to nearly every test, making them very useful for trapping a subject or blocking the player from a hazard. This mechanic becomes much more crucial during Co-op, as they're often used for blocking the partner from crashing into a hazard, or used to obstruct the duo from continuing.