diff --git a/public/react/src/modules/page/VNCDisplay.js b/public/react/src/modules/page/VNCDisplay.js
index 1e443ed1d..fd52fef07 100644
--- a/public/react/src/modules/page/VNCDisplay.js
+++ b/public/react/src/modules/page/VNCDisplay.js
@@ -108,6 +108,17 @@ class VNCDisplay extends Component {
         rfb.addEventListener("desktopname", updateDesktopName);
         // Set parameters that can be changed on an active connection
         rfb.viewOnly = readQueryVariable('view_only', false);
+        // TODO scale
+        // https://github.com/novnc/noVNC/issues/1181
+        // http://localhost:3007/tasks/et8zqfkh9lsn
+        /**
+            https://www.shiyanlou.com/courses/?fee=free&page_size=20&category=Linux%E8%BF%90%E7%BB%B4&tag=%E5%85%A8%E9%83%A8&sort=default&preview=false
+            参考实验楼实现方式：
+            div position: relative; width: 744.9px; height: 558.675px;
+            div position: relative; width: 1152px; height: 864px; transform-origin: 0px 0px; transform: scale(0.646615, 0.646615);
+            div width: 1152px; height: 864px; position: absolute; left: 0px; top: 0px; overflow: hidden;
+            canvas
+         */
         rfb.scaleViewport = readQueryVariable('scale', false);
 	}