5
：
Toggle arm light, back light and no light.
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Output the mirror image
：
Switch the image mode between positive and negative.
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Image freeze
：
Image split.
：
Title freeze.
In Title freeze mode, there are 4 buttons used to adjust the title function:
: Enlarge the frozen title area
: Reduce the frozen title area
: Adjust the frozen title position.
：
Picture in picture
：
Click to go to start page of the embedded multimedia system.