diff --git a/ZMQ-Message-Reference.md b/ZMQ-Message-Reference.md
index 0830d90..fd3ba3e 100644
--- a/ZMQ-Message-Reference.md
+++ b/ZMQ-Message-Reference.md
@@ -78,6 +78,14 @@ Reply Messages:
 
 ## 'scanRequest'
 
+Data is a JSON scan request. For example:
+```
+    msg = ['estimatedTime',   Scan_Request ]
+```
+
+Reply Messages:
+- `["status","ok"]`
+
 ## 'abortScan'
 
 ## 'pauseScan'