PDF21: Using List tags for lists in PDF documents.

PDF20: Using Adobe Acrobat Pro's Table Editor to repair mistagged tables.

PDF19: Specifying the language for a passage or phrase with the Lang entry.

PDF18: Specifying the document title using the Title entry in the document.

PDF17: Specifying consistent page numbering for PDF documents.

PDF16: Setting the default language using the /Lang entry in the document.

PDF15: Providing submit buttons with the submit-form action in PDF forms.

PDF14: Providing running headers and footers in PDF documents.

PDF13: Providing replacement text using the /Alt entry for links in PDF.

PDF12: Providing name, role, value information for form fields in PDF documents.

PDF11: Providing links and link text using the Link annotation and the /Link structure element in PDF documents.

PDF10: Providing labels for interactive form controls in PDF documents.

PDF9: Providing headings by marking content with heading tags in PDF documents.

PDF8: Providing definitions for abbreviations via an E entry for a structure.

PDF7: Performing OCR on a scanned PDF document to provide actual text.

PDF6: Using table elements for table markup in PDF Documents.

PDF5: Indicating required form controls in PDF forms.

PDF4: Hiding decorative images with the Artifact tag in PDF documents.PDF3: Ensuring correct tab and reading order in PDF documents.PDF2: Creating bookmarks in PDF documents.

PDF1: Applying text alternatives to images with the Alt entry in PDF documents.

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