The objective of this study is of a general theoretical nature. It concerns both ‘parenthetic’ verbs (certain words of speech, opinion or perception in some of their uses), and adverbs or adverbials ‘of enunciation’, as well as interjections, expression formulas, connectors and other discursive markers. Relegated to the margin of grammatical theories, escaping more or less seriously the properties of the categories to which they belong to the base (under an ang...