 But only from 2014 large scale migrations to ODF (and because of freedom of choice that brought) to LibreOffice started.The European Commission has, since at least 2003, been investigating various options for storing documents in an XML-based format, commissioning technical studies such as the "Valoris Report".In March 2004, the Telematics between Administrations Committee (TAC) asked an OpenOffice team and a Microsoft team to present on the relative merits of their XML-based office document formats.