diff --git a/Usage.md b/Usage.md
index 92dd396..97b1c28 100644
--- a/Usage.md
+++ b/Usage.md
@@ -86,10 +86,12 @@ For details, see [embedding documentation](https://github.com/vladmandic/human/w
 `Human` library can attempt to detect outlines of people in provided input and either remove background from input
 or replace it with a user-provided background image
 
+For details on parameters and return values see [API Documentation](https://vladmandic.github.io/human/typedoc/classes/Human.html#segmentation)
+
 ```js
-  const inputCanvas = document.getElementById('my-canvas);
-  const replacementBackground = document.getElementById('my-background);
-  human.segmentation(inputCanvas, replacementBackground);
+  const input = document.getElementById('my-canvas);
+  const background = document.getElementById('my-background);
+  human.segmentation(input, background);
 ```
 
 ## Draw Functions