Microtek ArtixScan 120tf Reference Manual page 119

4. Take note of the following:
110 Microtek ScanWizard Pro TX for Mac & PC
• To set the shadow (black) point, click on a dark area of the image, then
click the Black Magic Diamond in the tag window.
• To set the highlight (white) point, click on a light area, then click the
White Magic Diamond in the tag Window.
• To add a color cast: Click the Tag Windows tool in the Toolbar, then click
a color in the image that corresponds to the color cast to be added. Hold
down the Option key (Mac)/Alt key (PC), and then add the color cast.
• To remove a color cast, click on the part of the image where the neutral
color cast is, then click the RGB diamond in the Tag window.
Tag windows tool
Tag window
Magic Diamonds