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A '''manual override''' is a mechanism wherein control is taken from an [[automated system]] and given to the user. For example, a manual override in [[photography]] refers to the ability for the human photographer to turn off the automatic aperture sizing, automatic focusing, or any other automated system on the camera.<ref>[http://www.ambitions4.com/Glossary-Pub-View-Topic-Details.asp?GlossaryID=339&strChar=M Manual override], Ambitions Photography Academy.</ref>
Some manual overrides can be used to veto an automated system's judgement when the system is in error. An example of this is a printer's ink level detection: in one case, a researcher found that when he overrode the system, he could print up to 38% more pages at good quality from his printer than the automated system would have allowed him to.<ref name=BBC> [http://news.bbc.co.uk/2/hi/technology/3035500.stm 'Raw deal' on printer ink], ''[[BBC]]'', 3 July 2003 </ref>.
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As a plot device manual override is often used in [[Sci-Fi]] because of the usual prevalence of advanced / electronic technology. For example;
* In [[Star Trek]] many automatic systems, such as the automatic navigation, or the 'site-to-site transporter' can be overridden. A slightly different type of manual override is used in the film ''[[Star Trek: Insurrection]]'', when acting Captain of the [[Starship Enterprise]] (E) William Riker asks the computer for the 'manual command column', in effect a [[joystick]] which gives him [[pilotage]] control of the ship.
* In ''[[Casino Royale (2006 film)|Casino Royale]]'' (2006), a villan overrides the emergency [[fire sprinkler]]s at [[Miami airport]] and starts a distraction so that he can blow up a plane with a remote-controlled [[pipe bomb]].▼
▲*In ''[[Casino Royale (2006 film)|Casino Royale]]'' (2006), a villan overrides the emergency [[fire sprinkler]]s at [[Miami airport]] and starts a distraction so that he can blow up a plane with a remote-controlled pipe bomb.
== References ==
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