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+definition module StdBool2
+
+import StdBool
+
+class ~~ a :: !a -> a
+class (|||) infixr 2 a :: !a !a -> a
+class (&&&) infixr 3 a :: !a !a -> a
+
+instance ~~ Bool
+instance ||| Bool
+instance &&& Bool
+
+instance ~~ (a -> Bool)
+instance ||| (a -> Bool)
+instance &&& (a -> Bool)