2570 Geosoft Map Description File Text (Structured) File format developed by Geosoft to integrate all graphics elements such as polygons, lines and text and layers (images, data, basemaps, plots and grids) constructed in Oasis montaj software. 234 National Library of Australia / National Library of Australia 07 Jul 2022 07 Jul 2022 fmt/1726 PUID mdf File extension 2062 Geosoft Map Description File BOF, offset 56, magic bytes: / xs,ys,mb,mr,mt,ml 1 Absolute from BOF 56 56 2F2078732C79732C6D622C6D722C6D742C6D6C