- plusieurs notions utilisées dans la directive, telles que, entre autres, "combinaison préalable" (article 2, paragraphe 1), "de façon non occasionnelle" (article 2, paragraphe 2), "dans un délai raisonnable" (article 4, paragraphe 3), "limitation .déraisonnable" (article 5, paragraphe 2), "solutions appropriées" (article 6) et "prix" (article 3, paragraphe 1, et article 4, paragraphe 5);
several concepts used in the Directive, inter alia, "pre-arranged combination" (Article 2(1)), "other than occasionally" (Article 2(2)), "reasonable notice" (Article 4(3)), "limitations .unreasonable" (Article 5(2)), "appropriate solutions" (Article 6) "price" (Article 3(1), Article 4(5)).