| http://www.w3.org/ns/prov#value | - In addition, since sometimes the screen saver can become turned off for example by mistake, preferably in such cases the system can warn the user about it (at least for example if the screen is a CRT or SED or Plasma or other screen which can suffer from burnout), for example by indicating to the user the next time that he/she comes back after a certain period of inactivity that the screen has bee
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