ViewSonic VP3881 User Manual page 27

The OSD Menu and OSD Quick-Menu Symbol explanations and
their functional uses are stated below.
Activation symbol to turn the various modes on when operating
the menu system.
Activation symbol to exit, go back or deactivate the desired
function that is selected.
Scrolls through menu options and adjusts the monitor controls.
Symbol used to go back or revert back to the previously
selected menu
Information shortcut select button, which gives users access to
the information of the monitor currently in use.
Main menu icon that allows users to access the main menu.
Hold down the icon for a few seconds to turn off the main menu
Left and right icons toggle your selected choice horizontally.
OSD quick menu selector, which increases or decreases the
currently selected function
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