+ , (Opt_FlexibleInstances, turnOn, Opt_TypeSynonymInstances)
+
+ , (Opt_ModalTypes, turnOn, Opt_RankNTypes)
+ , (Opt_ModalTypes, turnOn, Opt_ExplicitForAll)
+ , (Opt_ModalTypes, turnOn, Opt_RebindableSyntax)
+ , (Opt_ModalTypes, turnOff, Opt_MonomorphismRestriction)