Use Background Visibility 
to open a pop-up menu and select one of the background visibility options.
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Background On shows the background at full visibility. See Background On.
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Background Off hides the background. See Background Off.
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Fade Background opens the Fade Background dialog where you can set the visibility for the background picture. See Fade Background.
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Click the Background Visibility
button on the toolbar, then choose Background On, Fade Background or Background Off from the pop-up menu.
Note: You can also set the visibility of the background with the Background Visibility menu options. See Background Visibility.