ccurs in both enunciative and situational levels.

 (g) even if enunciatiative and situational levels are independant they
could enter in relation :
- through the fact that detached disks refers to solid disks, and detached
moves refer to real moves
- through the critical goals (criterium : modal verb), whose function is to
construct another representation, and therefore to turn back to the
properties of the corresponding solid disks.

(d) the separation between enunciative level and situational level can
e