Benjamin Mako Hill 3fe02af221 poster_template: drop the PDF/UA-2 claim beamer cannot honour ...

The poster declared \DocumentMetadata with pdfstandard=ua-2 and patched
the frametitle template to emit H1 tags. On TeX Live 2024 that produced
an untagged PDF carrying an accessibility claim it did not meet. On TeX
Live 2025, which is what Overleaf runs, it does not build at all:

  ! Class beamer Error: The beamer class is not compatible with
    \DocumentMetadata

The LaTeX Tagging Project lists beamer and beamerposter as no-support,
meaning incompatible and not expected to change, and beamerposter pulls
in textpos and subfig which are incompatible in their own right. There
is no fix available, so the template now makes no claim and says why.
Removing the block also gets the poster building again.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

2026-08-13 18:16:01 -07:00

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