Never again active characters! Ω-Babel

International audienceThis progress report of the Ω development team (the first two authors) presents the first major application of Ω: an adaptation of Babel, the well-known multilingual LaTeX package, developed by the third author. We discuss problems related to multilingual typesetting, and show their solutions in the Ω-Babel system.The paper is roughly divided into two parts: the first one (sections 1–4) is intended for average LaTeX users, especially those typesetting in languages other than American English; the second part (section 5) is more technical and will be of more interest to developers of multilingual LaTeX software