NOTE 2: It is often difficult to distinguish between Informal Indirect Discourse and the Integral Part. Thus in imperávit ut ea fierent quae opus essent, essent may stand for sunt, and then will be Indirect Discourse, being a part of the thought, but not a part of the order; or it may stand for erunt, and then will be Integral Part, being a part of the order itself. The difficulty of making the distinction in such cases is evidence of the close relationship between these two constructions.