LG HU80KSW Owner's Manual page 71

Stopping the current function
•
The On Screen Display (OSD) of the projector may differ depending on
the model.
1
Press the button on the remote control.
2
Select the application name at the top left corner of the screen by the Remote
Control to display the Close icon.
3
Select the Close icon displayed next to the application name to quit the
function in use.
7