First Steps in Checking for Accessibility
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Specify document language (File > Document Properties > Advanced tab)
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Use document structure (On Pages panel, select all pages, right-click and select Use Document Structure)
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Run the Adobe Full Check (Advanced > Accessibility > Full Check)
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Long Description: The menu is opened to show the Accessibility submenu as well. The Accessibility menu option and the Full Check menu option on the Accessibility submenu are selected.