The fourth framework programme is different from its predecessors mainly in its structure, which reflects the unified RTD policy, its guiding principle, subsidiarity, and its content, as reflected in the renewed thematic framework.
Les elements fondamentaux qui caracterisent ce IVeme Programme Cadre par rapport aux trois precedents, concernent : sa structure, qui reflete l'unicite de la politique de RDT; son principe guide, qui est celui de la subsidiarite; et, son contenu, qui presente un cadre thematique renouvele.