diff --git a/src/core/js/ext_prop_display.js b/src/core/js/ext_prop_display.js
index bc4dc049b409fc1628704a6c778a2ec1c55ad638..3a8c616f503caadd4c0df04800bc8c15f0c068b2 100644
--- a/src/core/js/ext_prop_display.js
+++ b/src/core/js/ext_prop_display.js
@@ -21,6 +21,9 @@
 'use strict';
 
 /**
+ * Hide or show properties for specific roles and users
+ * see src/doc/extension/display_of_properties.rst for documentation
+ *
  * @requires jQuery (library)
  * @requires log (singleton from loglevel library)
  * @requires load_config (function from webcaosdb.js)