The Tags tab allows you to view and edit tags in the logical structure tree, or tags tree, of a PDF. In the Tags tab, tags appear in a hierarchical order that indicates the reading sequence of the document. The first item in this structure is the Tags root. All other items are tags and are children of the Tags root. Tags use coded element types that appear in angle brackets (< >). Each element, including structural elements such as sections and articles, appears in the logical structure order by type, followed by a title and the element’s content or a description of the content. Structural elements are typically listed as container—or parent—tags and include several smaller elements—or child tags—within them.

Though you can correct most tagging issues by using the TouchUp Reading Order tool, you must use the Tags tab to address detailed tagging of tables and substructure items—such as paragraphs, lists, and sections that require multiple languages. Add tags manually to a document in the Tags tab only as a last resort. First consider using the Add Tags To Document command.