Many grammatical frameworks have been proposed over the last decades to describe the syntax (and semantics) of natural language. Among the most widely used, one may cite (in chronological order) Tree-Adjoining Grammar (TAG) [Joshi et al., 1975], Lexical-Functional Grammar (LFG) [Bresnan and Kaplan, 1982], Combinatory Categorial Grammar (CCG) [Steedman, 1987], or Head- driven Phrase Structure Grammar (HPSG) [Pollard and Sag, 1994]. These frameworks present theoretical and practical interests. From a theoretical point of view, they provide a formal device for the linguist to experiment with her/his theories. From a practical point of view, they make it possible to automatically process natural language in applications such as dialog systems, machine translation, etc. They differ in their expressivity and complexity. Some reveal themselves more adequate for the description of a given language than others. Still, for many of these frameworks, large resources (i.e., grammars) have been designed, at first by hand, and later via dedicated tools (e.g., integrated grammar environments such as XLE for LFG [King et al., 2000]). In this workshop, we are concerned with this complex task of grammar engineering, keeping in mind the two above-mentioned theoretical and practical interests.