With M4 PERSONAL Version 7.0, DWG and DXF editing is even easier Published January 27, 2021 Done A new version under a new brand brings even easier access to standard formats and direct integration with online services Cambridge, UK and Pittsford, NY â 27 January 2021: M4 PERSONAL was previously known as MEDUSA4 Personal, and is in use worldwide with more than 250,000 installations. The CAD software has been used for many years to create CAD drawings quickly and easily in the home, education and small business environments. DWG and DXF editing with M4 PERSONAL With its versatile CAD functionality and ability to edit DWG and DXF files, the software has not only established itself with many private users and educational institutions, but also with companies that only occasionally require CAD software.