- On the ribbon, click
Raster Tools tab
Edit panel
Process Image drop-down menu
Palette Manager.
The Palette Manager dialog box is displayed.
- Click View menuShow Transparent. Or with no colors selected in the color table, right-click and click Show Transparent on the shortcut menu. A check mark means that transparent colors will be displayed with a “+” indicator.
Note: If no transparent color has been assigned, the Show Transparent menu item will be grayed.