In a description, the different parts of a 'tout' object are introduced in a text via identification that denotes them as presupposed already known elements standing in a thematic position. The theme is derived from an associative anaphor and transposed by means of a definite nominal unit. The qualities and characteristics attributed to the parts of a 'tout' object stand in a rhematic position constituted by the subject complement of the thematic subject. In opening constructions, the individual parts of an 'ensemble' object introduced in a text as new elements (therefore standing in a rhematic position) by means of identification are transposed by an indefinite nominal unit. The individual parts of an 'ensemble' object introduced in a text as new rhematic elements can be considered a 'linear discovery'. They are the result of a successive linear theme mechanism. The phrasal forms attaining the 'linear discovery' correspond to the syntactic thematisation of dislocated adverbials or to the scheme S-V-Od/adverbial. None of these procedures represent a unique type constrained to the description of a 'tout/ensemble' object.