This subject aims to provide a generic approach towards the building of digital critical edition of complex documentary corpora. Four innovative edition projects are involved, that give a panorama of the problems the members of a brand new edition projet have to deal with, so well so that the models or tools designed in the frame of this work will be considered generic in the sense that they match the needs of those diverse projects. Software solutions are expected, to adress the needs of the four projects in terms of documentary modelization and interaction, based on the state-of-the-art and, in particular, on the philologic platform 'Dinah'.