OpenDocument Master Document (.odm)
An ODM (OpenDocument Master Document) file is a master text document created by Apache OpenOffice Writer or another OpenDocument word processor. It contains multiple ODT files linked together, allowing users to manage and edit sections of a long document separately. This format is particularly useful for collaborative writing projects, as it simplifies the process of combining individual sections into a single cohesive document. The ODM file format was developed under the OASIS OpenDocument standard to promote interoperability across different word processing applications.