_Narratio_, statement of the facts,[32] should be concise, transparently clear, and plausible (_brevis_, _dilucida_, _verisimilis_). The application of the ancient maxim is to the connection of _narratio_ with _exordium_ by proper conjunctions and in several possible cases. Similarly are set forth the ways of connecting it with the following _petitio_, which is summarily defined. _Conclusio_ in a letter is not, as in a speech, the logical result of proof. Rather it is the satisfaction of whatever expectations have been aroused. It may be affirmative, negative, or conditional, so long as it is a satisfying close. Modes of connecting it with the rest of the letter again have most space. Book V. Summary Review of the Preceding Books The fifth book, reviewing all these items in the same order, constitutes a summary manual, a _summa dictaminis_. “Since I know that some will find the multiplicity of the preceding burdensome, let the multiplicity be reduced in this book to paucity in consideration for the unlettered (_rudium_). Thus, as for those who rejoice in abundance I have displayed letters both various and adequate, so for the many of weaker stomach who wish to be fed on light diet I ought to set forth food at once moderate and proper (_honestum_).” The author then proceeds seriatim with a digest. This book by itself provides about the same quantity of precept as suffices in other manuals to introduce collections of specimens; but it is exceptionally systematic.[33] C. _CURSUS_ In the twelfth and thirteenth centuries the practise of _cursus_ became more technical, and the use of the term more special. The Chancellor appointed by Pope Urban II was John of Gaetà (Giovanni Gaetano), who had learned _dictamen_ from Alberic of Monte Cassino,[34] and who was specifically commissioned to “reform the style of ancient grace and elegance in the Apostolic See” and to “restore the Leonine rhythm with its lucid rapidity.”[35] The dominant chancery style, thus reformed, embodied the principle of rhythmical close in three types of prose cadence: (1) _cursus planus_, víncla perfrégit; (2) _cursus tardus_, víncla perfrégerat; (3) _cursus velox_, vínculum frègerámus.[36] The first sentence of a mandate of Innocent III shows all three. Inter omnes munitiónes et cástra (_planus_) quæ Romana ténet ecclésia (_tardus_) munitionem et castrum Montis Fiasconis non solum inténdit sed cúpit (_planus_) et providéntius gùbernári (_velox_) et studiósius cùstodíri (_velox_).[37] The indignant closing paragraph of Dante’s letter to the Florentines begins: