The description of odm format expansion
The odm file is a working text document, which is created by OpenOffice or any other text editor with OpenDocument standard support. Stores links to the external files, which include the content of the document. Such a document may also contain the content table and search index.
The working documents allow the writers to handle with discrete pieces of a large document. Such mechanics are especially useful during writing of the books, periodicals and other large-scale compilations.
The ODM files use the formatting, which is based on the XML language, and identified by the OASIS OpenDocument standard.