Transformational grammar; Minimalist program; Economy of derivation; Greed, principle of; Procrastinate, principle of; Full interpretation, principle of; Principles and parameters theory; Prinzipien- und Parametermodell; Generative grammar ; Syntaktische Merkmale; Syntactic features; Full interpretation, principle of; Interpretierbarkeit (Grammatiktheorie) ; Interpretability (theory of grammar) ; Features (synt.) ; Case (morph.) ; ECM; Exceptional case marking; Case (synt.) ; Clitics ; Langue d'oïl; Old French ; Italian (southern dialects) ; Southern Italian dialects ; Romanian