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Load all backgroundload all background image stored in native machine,
it will prompt completion when progress bar is 100%
Switch all to background color two groups of main output both switch to
pure color background
Background management：can manage respectively the background image of
output 1 and 2;”LOAD”invoke stored
background image and pure color background
Background capture：capture the image of main output, can stored 3 pictures.
It will prompt completion when progress bar is 100%
Output/Screen 1
Output/Screen 2
Enter
Return
Background Management
Background1 Background2
Background3 Background Color
Edit
LOAD
Return
背景设置 Prog.Screen 1
