but by right clicking in a field environment, i got the help page

maybe i read wrong but in this help page i did not found anything relative to how to (un)fold all the "fold" environment ; is there a means to do that ?

2) how to create a style so that "definitions" dont be in italic ?

3) how to change the automatic numerotation of exercices so to have E.1, E.2, E.3 instead of 1;2;3 ; because i have exercices in my lesson and exercises in the speficic exercices paper ; and when i tell my students "see exercise 2" there is a confusion wether they should look at the exercises paper of at the lesson paper, so i would like to have E.1, E.2.. on the one and L.1, L.2 on the other paper

thanks

Vincent