The OpenDocument Global Text Document extension, or ODM extenstion, is a document file that has become a part of the OpenDocument format for Office Applications and has been expected to become an industry standard. Although OpenOffice has adopted that extension, other software suites may also produce this extension in its formats.
Mime type: application/vnd.oasis.opendocument.textmaster, application/x-vnd.oasis.opendocument.textmaster
