SExtractor stands for ``Source Extractor'': a software for making catalog of sources from astronomical images. Multi-Extension FITS is now supported. Binary output catalogs are also MEFs. ASCII output catalogs contain detections from all extensions merged together. Use the "EXT_NUMBER" catalog parameter to identify the extension on which a given source was detected. Check-images will also be written as MEFs if the input image is a MEF. - The (main) default config file can be dumped by typing "sex -d". Secondary configuration files like default.param are still needed, though. The SExtractor homepage is http://astromatic.net/software/sextractor In case of problems, questions or suggestions related to the software, please refer to the SExtractor forum: http://astromatic.net/forum/forumdisplay.php?fid=4 Emmanuel Bertin.