Alienware AW3821DW 37.5" 1600p 144 Hz Curved Gaming Monitor - Manual (Page 41)

Operating the monitor | 41
When you press any of these button on the rear panel (including the joystick
button), the OSD Status Bar appears to let you know the current settings of
some OSD functions.
NOTE: The Smart HDR state is enabled automatically when your display
detects HDR content. It cannot be enabled manually.
Using the On-Screen Display (OSD) menu
Accessing the menu system
Icon Menu and
submenus Description
Game Use this menu to personalize your visual gameplay
experience.