welcomeController.etudiant and ((sessionController.autoriserEtudiantAModifierEntreprise ||
			                                    (!sessionController.autoriserEtudiantAModifierEntreprise
			                                    and ((empty conventionController.convention.contact.loginModif and
			                                    conventionController.convention.contact.loginCreation==sessionController.currentLogin)
			                                    || (conventionController.convention.contact.loginModif