Dear All,<br><br>I am trying nek5000 under ubuntu.<br><br>As a beginner, I just wonder which is the best way to create the .usr file, should I copy one from the examples and change it for my case or use a tool just like genbox, genmap, etc. to generate it? I have the same question for creation of SIZE<br><br>By the way, I can only find the usage of prenek and demonstrative cases from the old manual of nekton, what is the current way of generating meshes for public uses?<br><br>Thank you very much in advance.<br><br>Zhenyu<br>