In most French Linguistic studies, the object is so-called standard French, a rather woolly and reductive designation. The particularities of national languages such as Belgian and uebec French are often forgotten or treated as outlandish facts. Contrary to that, this volume presents contributions from the first Montreal conference: Lexique-grammaire compares, which dealt with the formal description of different variants of French from two essential points of view (lexicon and syntax) and computational treatment of data.