> Our question is : how can we "force" GMSH to create .msh file in format version 2 ? On the command line, try '-fornat msh2' http://gmsh.info/doc/texinfo/gmsh.html#index-_002dformat-string -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://onelab.info/pipermail/gmsh/attachments/20180912/68a973de/attachment.html>