English
5.Decrease:This button is used to adjust the decreasing Value of selected OSD control option and VOLUME adjust function quickly when have Audio function.
6.OSD Menu/select: Pressing this button pops up the OSD menus on the screen and used to select the OSD control options on the screen.
7.Auto tuning: Automatically sixes, centers and fine tunes the Video
signal to eliminate 
noise
a nd distortion.
*8. Light sensor: Compensate light output to optimize. *Option Item
7