There are 3 file types use the .ODF file extension:
1. OpenDocument Formula
An ODF file is a document created by Apache OpenOffice Math, a program used for creating math formulas. It contains one or more mathematical equations and may also contain macros. ODF files are based on the OASIS OpenDocument standard.
Updated: February 19, 2017
2. Open Document File
Generic file created using the Open Document Format (ODF) standard; may contain one of several types of Open Document data, such as spreadsheet, text, or presentation data; saved in the XML-based OASIS Open Document Format and supported by multiple productivity applications.
NOTE: ODF files are more commonly seen with a specific extension type, such as .ODT for word processing documents, .ODS for spreadsheets, or .ODP for presentations.
Updated: March 29, 2016
3. Battlezone Object Definition File
Game settings file used by Battlezone, a 3D game where players battle with futuristic combat vehicles; contains plain text specifications for game objects, called "classes;" may define unit names, mission objectives, vehicle properties, artificial intelligence players, sound effect file references, and other settings.
Since ODF files are saved in a text format, they can be opened and edited with any text editor. ODF files are typically stored within the Activision\Battlezone\addon directory. They are one of several other files that comprise a game map.
NOTE: Battlezone was released in 1998.
Updated: November 5, 2010