diff --git a/documentation/NDPluginOverlay.html b/documentation/NDPluginOverlay.html
index 8c561fd..b885ce3 100755
--- a/documentation/NDPluginOverlay.html
+++ b/documentation/NDPluginOverlay.html
@@ -381,7 +381,8 @@ NDOverlayConfigure(const char *portName, int queueSize, int blockingCallbacks,
   </div>
   <p>
     Image display from ImageJ for the overlay settings in the screen above. Note that
-    the cursor is set to track the centroid of a laser pointer via the input links.</p>
+    the cursor is set to track the centroid of a laser pointer via its X and Y position
+    input links.</p>
   <div style="text-align: center">
     <img alt="NDOverlay_image.jpg" src="NDOverlay_image.jpg" />
   </div>