| abstract
| - In OpenArena, a demo is a "recording" of a match, stored in file that can be later played by the game. This means that you can record your matches (from your own point of view when you are playing, or from someone else's point of view when you are spectating) and watch them later, inside OpenArena. If you wish, you can send the demo file to friends of yours that use the game. Demo playback elaborates 3D graphics in real-time (the machine does not work like when watching a movie, but like when playing the game): this allows demo files to maintain reasonable size, but they can be played only using OpenArena, and demos recorded with too much different versions of the game may have compatibility problems. However, it is possible easily to "export" demos to "movies" in .avi format (third party software later needed to play and modify AVI video files). A demo file has got an extension like .dm_XX, where XX is a number that changes when major updates to the game change the protocol version, for example a demo recorded with OpenArena 0.8.5 (which uses protocol 71) will have a .dm_71 extension.
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