prawn-accessibility layers tagged-PDF support onto the published prawn, pdf-core, and (optionally) prawn-table gems. It adds a high-level API for marking document structure — headings, paragraphs, figures, tables, and artifacts — so Prawn can produce Section 508 / WCAG accessible PDFs. The behavior originates from the stalled upstream pull requests prawnpdf/pdf-core#67, prawnpdf/prawn#1391, and prawnpdf/prawn-table#164, repackaged here as a standalone gem that patches the released libraries via `prepend`/additive re-opens rather than forking them.