Sub Swap (Var1, Var2) Var1 = Var1 Xor Var2 Var2 = Var2 Xor Var1 Var1 = Var1 Xor Var2 End Sub
See: Xor swap algorithm
... the Tapajós[?] rivers. Situated along the equator, Brazil's climate is predominantly tropical[?], with little seasonal variation, though the subtropical south is mor ...