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The outline of a PDF file allows screen readers to easily navigate a document. For instance, if every section of a chapter is tagged, a user can quickly jump from one section to the next. Microsoft Word documents created using the built-in heading styles (e.g. Heading 1, Heading 2) can be used to create tagged PDFs that contain an outline. PDFs created from a scanned document usually do not have outlines because the scanner cannot distinguish between chapters or sections within a document. It can be complex to tag PDF files.
Symbols
The following symbols are used to display the result of the accessibility file scan.
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