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To assign a mask to the mask tray:
1 If needed, drag a photo from the Transporter.
2 Create a mask. Refer to “Creating Masks” on page 87.
3 Click an unused position to assign the mask to that spot in the mask tray, or click the
Plus button to add the mask to the next available spot.
• Click each in use spot in the tray to view the current stored masks.
• Click the Plus button to assign a mask to a spot in the mask tray.
• Click the Minus button (or Alt+click, or Option+click) to clear a mask from the
mask tray.
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To edit an alpha channel, press Option+T to load the current alpha
channel. Edit it then press Ctrl+T to transfer the results to the Alpha
channel. Press A to view areas that will be transparent.