Specify the Scan Settings50
Clear
Erases the preview.
Width/Height
Shows the width and height of the area to be scanned.
Prescan
Displays a preview in the preview window.
Help
Displays the Help.
Manual Scanning Mode
Rotation
The TWAIN driver support 3 kinds of rotation type: None, Right 90, Left 90
Brightness/Contrast
This function is used to set the brightness and contrast of the image.
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