5709a7858d5c197721be66d5218a79124abadb70
lrnassar
  Tue Mar 17 08:46:31 2026 -0700
Adding alt text to images across static documentation pages, CGI headers, markdown docs, and Pandoc templates. Content images receive AI-generated descriptive alt text; decorative images (icons, spacers, toggles) receive alt="" per WCAG best practice. Also adds Image Descriptions section to the accessibility page, and fixes Pandoc Lua writers to output alt attributes. 67 files, covering help docs, news archive, ENCODE pages, portal pages, and session examples. refs #37254

diff --git src/hg/htdocs/training/openHouse.html src/hg/htdocs/training/openHouse.html
index b3d8232b141..f91e6b6c72b 100755
--- src/hg/htdocs/training/openHouse.html
+++ src/hg/htdocs/training/openHouse.html
@@ -45,23 +45,23 @@
 <h3>What are we doing?</h3>
 <ul>
   <li>Our staff will be available to talk to you about the Browser.
   <li>You are encouraged to have your cameras on &mdash; we want to meet you, too! 
   <li>We will have breakout rooms where you can self-assign: 
      beginner/experienced, research/clinical, other</li>
   <li>You are free to move about among rooms.</li>
   <li><a href = "https://hgwdev-kuhn.gi.ucsc.edu/training/breakout.jpg" target = _blank>Breakout room help</a> &mdash; 
      On a Mac it's not obvious how to get into a zoom chat room.
      On any machine, it's not obvious how to get back to the main room.</li>
 
 </ul> 
 -->
 
 <a href = "https://genome.ucsc.edu/s/Example/wuhCor1_proPro2" 
-target = _blank><img src = "../images/spikeProPro.jpg" WIDTH = 900 HEIGHT =450></a>
+target = _blank><img alt="Genome Browser view of SARS-CoV-2 spike protein proline substitutions in mRNA vaccines" src = "../images/spikeProPro.jpg" WIDTH = 900 HEIGHT =450></a>
 
 
 </div>
 
  &nbsp;
 
 <!--#include virtual="$ROOT/inc/gbPageEnd.html" -->