Didascalia: positive, free, particular, universal, catechetical, systematic
The fifth is DIDASCALIA properly so called, which is either bound to the text it interprets — and from that text its order chiefly depends — whence it is called positive theology, because by interpreting Scripture it lays down the principles and foundations of theological dogmas;
or it is free, and that particular, about a certain argument only: if it is taught in a popular manner, it is fitted to the time, place, and capacity of the hearers; if by the rule of art or scholastically, it nearly follows the laws of treating a theme logically;
or it is universal, and that either compendious or catechetical about all or at least most things necessary to salvation, or full or systematic about all or most things revealed from heaven.
And this can be twofold: historical and logical.
Latin
QUINTUS est DIDASCALIA proprie sic dicta, quae est vel alligata ad textum, quem interpretatur: a quo propterea ordo ejus potissimum dependet. unde Theologia positiva dicitur, quippe quae, interpretando scripturam, principia & fundamenta dogmatum theologicorum ponit: vel est libera, eaque particularis, de certo duntaxat argumento, quae si populariter instituitur, tempori, loco & captui auditorum accommodatur: si ad artis regulam sive scholastice, thematis logice tractandi leges fere sequitur: vel universalis, eaque vel compendiosa sive catechetica de omnibus vel plerisque saltem necessariis ad salutem, vel plena sive systematica de omnibus aut plerisque revelatis divinitus. Atque haec duplex esse potest historica & logica.