LG LGVS840PP - Manual (Page 169)

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Settings
Developer options
Keep in mind that turning on these developer settings may result in irregular
device behavior.
USB debugging: Checkmark to turn on debug mode when USB is
connected.
Development device ID: Displays the development device ID.
Stay awake: Checkmark to set the screen to never timeout while
charging.
Allow mock locations: Checkmark to set the device to a mock location.
Desktop backup password: Checkmark to set a password to back up
the desktop.
USER INTERFACE
Enable strict mode: Checkmark to flash the screen when applications
operate for a long period of time on the main thread.
Show touch data: Checkmark to make touch data visible on the screen.
Show touches: Checkmark to show visual feedback when the screen is
touched.
Show screen updates: Checkmark to flash areas of the screen when
they are updated.
Show CPU usage: Checkmark to overlay the current CPU usage on the
screen.
Force GPU rendering: Checkmark to use the 2D hardware acceleration
in applications.
Window animation scale: Opens a dialog box to set the window
animation scale.
Transition animation scale: Opens a dialog box to set the transition
animation scale.