Dell E173FPc83.3 On Screen Menu/Display (OSD)Direct-Access FunctionsFunction Adjustment MethodAuto adjustment Use this button to activate automatic setup and adjustment. Thefollowing dialog will appear on screen as the monitor self-adjuststo the current input:Auto Adjust In ProgressAuto Adjustment button allows the monitor to self-adjust tothe incoming video signal. After using 'Auto Adjustment', you canfurther tune your monitor by using the 'Pixel Clock' and 'Phase'controls in the OSD.Brightness / ContrastWith the menu off, push button to display the 'Brightness' and'Contrast' adjustment menu.The 'Brightness' function adjusts the luminance of the flat panel.Adjust 'Brightness' first, and then adjust 'Contrast' only if furtheradjustment is necessary."+" Increase 'brightness';" - "decrease 'brightness'The 'Contrast' function adjusts the degree of difference betweendarkness and lightness on the display screen."+" Increase the 'contrast'; "-" decrease the 'contrast'