S-FI (aspect of the relation sign-final interpretant)
It describes the relation between Sign and its Final Interpretant. It is the manner the sign would represent its object in an infinitely distant future, when it would achieve its representative perfection. This trichotomy is an iterative relation between S and FI on the axis of Signification. After going through the sieve of representing its dynamic object and submitting itself to the constraints of the effective situations of representation, the sign now can pursue a representative final cause, which will overlap its previous presentative function. The relation S-IF means, thus, the return of the sign to the telic axis of signification to recalibrate itself once again in its path to the summum bonum.