 It seems that in his treatise on obligationes, Roger Swyneshed developed his rules for obligational disputations with an approach like this (the text is edited in Spade 1977). Especially interesting in this respect is his discussion on impositio, or the kind of obligational disputation where a new meaning is given to some linguistic entity. According to Swyneshed, even if the respondent were obligated by the impositio that ‘you are a donkey’ means that God exists, the respondent must deny being a donkey. The proposition “‘you are a donkey’ is true” must however be granted. According to Swyneshed’s principle, “because of an impositio of some proposition the answer to be given to it is not to be changed” (Spade 1977, 254). It seems thus that the impositio influences only situations where the proposition at issue is mentioned rather than used.