«وقد يذكر الجهة في القضية، فتسمى موجهة ورباعية أيضا»
A modality may be mentioned in the proposition, so it is also called a modal or four-part proposition.
So far we have considered subject, predicate, and their relation. Modality (jihah) further qualifies the manner in which the relation holds: for example, necessity, possibility or a specified permanence.
A proposition explicitly containing such a qualification is modal (muwajjahah). The book begins its detailed classification of modalities on the following page; their precise divisions and conditions belong to the next level.