The introduction of a speech, where one announces the subject and purpose
of the discourse, and where one usually employs the persuasive appeal
of ethos in order to
establish credibility with the audience.
Sources:
Aristotle 3.14; Ad Herennium 1.4.6-1.7.11; Cic. De Inv. 1.15-18; Cic.
Top. 25.97; Cic. De Or. 2.78-80; Quintilian 4.1
The introduction of a speech, where one announces the subject and purpose
of the discourse, and where one usually employs the persuasive appeal
of 