Hi there, I see that the element entities option is greyed out when exporting to STL surface mesh. How do I enable that? Or it's not possible since STL should not have any physical entities tagging? Thanks. Cheers, Sam -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://www.geuz.org/pipermail/gmsh/attachments/20101110/8ae2e949/attachment.html>