diff --git a/scratchpad-scripts/ghacks-clear-57-[changes-only].js b/scratchpad-scripts/ghacks-clear-57-[changes-only].js
index 358fb9f..08ee19c 100644
--- a/scratchpad-scripts/ghacks-clear-57-[changes-only].js
+++ b/scratchpad-scripts/ghacks-clear-57-[changes-only].js
@@ -1,3 +1,4 @@
+/* see https://github.com/ghacksuserjs/ghacks-user.js/wiki/1.6-Bulk-Pref-Resetting-[Scratchpad] */
 
 (function() {
   let ops = [