The technical elements necessary for fixing the work are:
1° For works fixed on a photochemical medium:
a) Image negative film;
b) Sound negative film and sound magnetic media;
c) Where these are the only technical elements existing or available, positive copies or intermediate elements enabling positive copies to be obtained;
2° For works on analogue media other than photochemical media: the original analogue media usually referred to as “masters”;
3° In the case of digital works: the digital source files usually referred to as “digital masters”.