Another useful concept that focuses on the user rather than on the use of special registers is that of linguistic or verbal repertoire (Gumperz 1964:137). Trudgill defines this as the ``totality of linguistic varieties used [in different social contexts] ... by a particular community of speakers ... ."

Since different speakers may have repertoires different from the set of varieties shared by the group as a whole, I would define repertoire as an individual's particular set of skills (or levels of proficiency) that allow him/her to function within various registers of (a) language(s). Different individuals' repertoires will