This reading may help you to solve your problem: https://drcuis.github.io/TheCuisBook/The-Package.html#index-class-category-3 -- http://mamot.fr/@drgeo -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.cuis.st/mailman/archives/cuis-dev/attachments/20250927/6ff3f1c8/attachment.htm>