diff --git a/REQUEST_FORMAT.md b/REQUEST_FORMAT.md
index 41b3d12417a97e76406012b386beaa0d2c27d17b..74d43fa9c227f4a5d1235e3c8ed3eb50c35a6a48 100644
--- a/REQUEST_FORMAT.md
+++ b/REQUEST_FORMAT.md
@@ -16,7 +16,8 @@ and type-dependent data. e.g.
 ```
 {
     "type": "text",
-    "text": "This will hopefully be useful information."
+    "text": "This will hopefully be useful information.",
+    "url": "link_to_external_page_with_more_information"
 }
 ```