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Creating structure in a PDF file allows screen readers to easily navigate a document.
For instance, if every section of a document is tagged, a user can quickly jump from one section to the next. For example, Imagine someone looking at a syllabus who could visually scan the document for the section on grading, while ; someone using a screen reader could do the same audibly if the sections are marked correctly.
Documents created in a word processor (Word, Google Docs, Pages) create a structure using the built-in heading styles (e.g. Heading 1, Heading 2). That structure will be saved in the native document format, or by saving as a tagged PDF. 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, and we suggest contacting the accessibility team if you need help.
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