diff --git a/ayanova/devdocs/todo.txt b/ayanova/devdocs/todo.txt
index a24733cb..1c1af501 100644
--- a/ayanova/devdocs/todo.txt
+++ b/ayanova/devdocs/todo.txt
@@ -149,6 +149,7 @@ todo: careful and thorough PERF tests remotely and local
 	- https://www.digitalocean.com/community/tutorials/how-to-use-chrome-dev-tools-to-find-performance-bottlenecks?utm_source=DigitalOcean_Newsletter
 	- https://developers.google.com/web/tools/chrome-devtools/evaluate-performance/reference#rendering
 todo: keyboard usage test:
+	https://www.sarasoueidan.com/blog/keyboard-friendlier-article-listings/
 	- https://rockfish.ayanova.com/default.htm#!/rfcaseEdit/3481