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  1. Inferis

    Actually, that “general pool of variables” is the window object. You can easily test this by defining a function (for example: “foo1”) and then checking on the value through the window object: “window.foo1”. You’ll see that both “foo1” and “window.foo1” are the same. The same applies for all predefined window methods and properties (and thus window.open(...) = open(...)).