Hi, I am looking for the os.environ["GRASS_..."] that would lead me safely to the /etc/proj/ogr_csv anybody could tell me where I can access to the list of those GRASS_ env variables? Thanks, Yann -- ----- Yann Chemin Address: 3 Toul Melin, 56400 Plumergat Mobile: +33 (0)7 83 85 52 34