 Note. It is possible to add rules for the Identity predicate, but in general these are not included in works on the standard dialogical framework. The reason for this is that no consensus on the appropriate kind of rule can seem to be reached: should there be special particle rules, thus fully embracing the idea that this predicate is a logical constant of the vocabulary? or should there be special clauses in the Formal Rule for this predicate because it is the rule that deals with elementary statements? Either way, the rules have the effect of capturing the reflexivity, transitivity, and symmetry of the Identity predicate as well as the principle of substitution of identicals.