187:-like functionality to periodically save all versions of a document. This eliminates the need for any manual saving, as well as providing versioning support through the same system. A version is saved every five minutes, during any extended periods of idle time, or when the user uses "Save a version," which replaces the former "Save" menu item and takes its Command-S shortcut. Saves are made on snapshots of the document data and occur in a separate thread, so the user is never paused during this process. Applications need to be updated to take advantage of this functionality, and a number of Apple's built-in programs were updated with the release. Autosave cannot be disabled in Lion.
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It has traditionally been seen as a feature to protect documents in an application or system failure (crash), and autosave backups are often purged whenever the user finishes their work. An alternative paradigm is to have all changes saved continuously (as with pen and paper) and all versions of a
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sequel, the chip trader machines autosave upon giving out a new battle chip so the player can't cheat by soft resetting after each try of the chip trader until the desired chip is received. A more serious downside of autosaving is that it can prevent the player from completing a game if a save
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and, by default, saves the document every ten minutes in the temporary file directory. Restarting an Office program after crashing prompts the user to save the last recovered version. However, this does not protect users who mistakenly click "No" when asked to save their changes if
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is blurred. Some games use autosave as the only method of saving data, and the player must complete a set amount of the game before saving takes place. Still another use of autosaving is as an anti-cheating device; for example, in every
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document available for review. This would remove the need for saving documents entirely. There are challenges to implementation at the file, application and operating system levels.
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which automatically saves the current changes or progress in the program or game, intending to prevent data loss should the user be otherwise prevented from doing so manually by a
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operation fails due to a sudden cessation of game operation, whether by a crash, freeze, or power loss of the gaming system (resulting in the save file being
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One of the first implementation of this feature appears in the text editor
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or a player mistake (such as making a wrong decision in a game with
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