Toshiba Qosmio F10-124 User Manual page 24

General Precautions
Afterimage
Afterimage is a phenomenon that occurs on the screen when changing the
current contents of the screen to another after having viewed the current
contents for a relatively long time. The afterimage will gradually disappear.
However, it may persist permanently when the same image has been
displayed for a very long period of time. Avoid displaying the same contents
for a long stretch of time. We recommend that you change the image of the
screen by using a different background or activating a screen saver.
To avoid this phenomenon, two features are provided. One is the Monitor
Power OFF option in the Toshiba Power Saver, which atomically turns off
the power of the display. The other is the Screen Saver option in the
Display Properties, which automatically changes the contents of the
screen. Both are ON by default.
User's Manual xxiv