Well Tagged PDF Video Examples
\documentclass[a4paper,twocolumn]{article}\usepackage{unicode-math}\usepackage{graphicx}\usepackage{amsthm}\newtheorem{theorem}{Theorem}\usepackage[colorlinks]{hyperref}\addtolength\marginparwidth{1.3cm}% stub if not tagging\providecommand\tagpdfsetup[1]{}\begin{document}\title{A Two Column Example}\date{2025-03-13}\author{The \LaTeX\ Team}\pagestyle{headings}\maketitle\begin{abstract} An example document showing automatic tagging of typical structures found in a \LaTeX\ document, including titles, sections, theorems, lists, citation lists and mathematics. A two column layout is used, the tagging enables the reading order to correctly follow the flow of text through the columns.\end{abstract}\tableofcontents\section{Introduction}This document shows a typical two-column document incorporating tables, figures and mathematics.Apart from two commands at the start to enable tagging, and a smallamount of additional markup to give alternative texts for graphicsinclusion, and to specify the heading rows of tables%\footnote{The current tagging markup for tables is temporary and a new interface
\DocumentMetadata{ lang = en, pdfversion = 2.0, pdfstandard = ua-2, pdfstandard = a-4, testphase = latest}\tagpdfsetup{ math/setup=mathml-AF, root-supplemental-file=latex-align-css.html, root-supplemental-file=latex-list-css.html }\input{t4}
\DocumentMetadata{ lang = en, pdfversion = 2.0, pdfstandard = ua-2, pdfstandard = a-4, testphase = latest}\tagpdfsetup{ math/setup=mathml-SE, root-supplemental-file=latex-align-css.html, root-supplemental-file=latex-list-css.html }\input{t4}