Viewsonic VG171 ユーザーズマニュアル

 sets the length of time an on-screen display screen 

is displayed. For example, with a “15 second” setting, if a 
control is not pushed within 15 seconds, the display screen 
disappears.

 Allows you to enable or disable the message. That 

appear when the input source or timing is change.

 turns the OSD background clear so that open 

applications can be seen while making OSD adjustments.

 returns adjustments to the original factory 

settings if the display is operating in a factory Preset Timing 
Mode listed in this user guide.
Exception: This control does not affect changes made with the 
User Color control.