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Boolean Variables can be used as switches. They basically have 2 states: True and False (or "On and Off", or "1 and 0").

A Boolean variable uses the least memory compared to other variable types. The reason for this is a Boolean value can only be 1 or 0. Whereas, compared to an Integer Value, which can be anything from −32,768 to 32,767 (may need verification). For this reason, it is recommended to use Booleans whereever possible.