Export from Display3D to OFF allowing to generate a U3D/PDF format
see pdf file: https://liris.cnrs.fr/dgtal/wordpress/wp-content/uploads/2010/10/3dKSSurfaceExtractionExport.pdf
You can read about formats in the economics essay writing service https://mid-terms.com/informative-economics-essay-writing/ because using their examples you will be able to assess the importance of their use in economic (and not only) spheres of human activity.