diff --git a/Demos.md b/Demos.md
index 2a77887..babbcf2 100644
--- a/Demos.md
+++ b/Demos.md
@@ -43,6 +43,13 @@ all configurable in `browse.js:ui` configuration object and in the UI itself:
 - `ui.drawPolygons`: connect detected points with polygons
 - `ui.fillPolygons`: fill drawn polygons
 
+Demo app can use URL parameters to override configuration values  
+For example:
+
+- Force using `WASM` as backend: <https://vladmandic.github.io/human/demo/index.html?backend=wasm>
+- Enable `WebWorkers`: <https://vladmandic.github.io/human/demo/index.html?worker=true>
+- Skip pre-loading and warming up: <https://vladmandic.github.io/human/demo/index.html?preload=false&warmup=false>
+
 <br><hr><br>
 
 ### Face 3D Rendering using OpenGL