Acer AR360 F1 - Manual (Page 127)

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Exit
Select the Exit tab from the BIOS Setup Utility screen to enter the Exit
BIOS Setup screen.
Save Changes and Exit: When you have completed the system
configuration changes, select this option to leave the BIOS Setup Utility
and reboot the computer, so the new system configuration parameters
can take effect. Select Save Changes and Exit from the Exit menu and
press <Enter>.
Discard Changes and Exit: Select this option to quit the BIOS Setup
Utility without making any permanent changes to the system
configuration, and reboot the computer. Select Discard Changes and
Exit from the Exit menu and press <Enter>.