Answer:
If you're fortunate enough to have a monitor with a screen that never requires you to make adjustments, you might not have tried out the monitor's controls. Where the controls are located varies, but most CRT (cathode-ray tube) and LCD (liquid-crystal display) monitors have control buttons on the monitor's front bezel, usually along the bottom edge or off to the side. The typical arrangement on today's monitors involves four buttons: one to access the OSD (on-screen display; a menu that appears on your monitor so you can see what adjustments you're making), two to navigate backward and forward or up and down through the OSD menu, and one to exit the OSD. By contrast, older monitors often have individual controls similar to those found on a television set to adjust brightness, contrast, and so forth.
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