Avision AV880C - Manual (Page 33)

4-9
Advance Settings: (PC)
Click to remove R(Red), G(Green), or B(Blue) color
background to sharpen your text or drawing.
Invert: The invert command reverses the brightness and the
color in the image. For color images, each pixel will
be changed into its complementary color at the
command of Invert.
(PC)
(Mac)