Trials can be studied from different points of view. They can be examined linguistically, or viewed as drama, strategic interaction, or a kind of human communication. The purpose of what unfolds in a trial is that of monitoring the judge's impressions and inferences. Our present goal is to understand and illustrate what the public prosecutor does in order to achieve the prosecution's objective. In researching this paper, we made use of software tools to analyze transcripts and audio/video materials, which Guglielmo Gulotta-professor of psychology, practicing lawyer and strategiccommunication expert-uses in his second capacity, whereas for Angelo Zappalà(the former's assistant and advisee) they become a way of making sense of the phenomena investigated. Since all the actions of the former are inspired by his strategic-communication expertise, it is interesting to study them from the perspective of the latter author, who is not a lawyer, and therefore approaches the subject more empirically. This study focuses on: (1) a case where the alleged victim, a male child, was purportedly subjected to sexual abuse; (2) the defense of a business owner who, in order to dissuade some strikers who are picketing his factory, loads the hunting rifle but in the moment the hunting rifle fires it wounds two strikers, giving one of them a serious facial injury.1 In Case 1 to graphically represent the content and the manner of what has been advanced and argued by the defense counsel and by the prosecution-distinguishing between the types of evidence presented in court, and encoding the relationship between facts and how they combine to produce the argument as a whole-we resorted to the Wigmore notation (in its modified form as given by Robertson), and the Birnbaum notation. In these, information on the argument structure is represented formally, whereas the argument content is represented informally. In order to study the 'way' to speak of the defendant and the prosecutor we used the software package ERRATACORRIGE. In Case 2 we used DART,2 a computer program written in Common Lisp that implements the model of dialectical argumentation developed by K. Freeman and A. Farley (Computer and Information Science, University of Oregon, USA).