1 files changed, 1 insertions, 0 deletions
diff --git a/lib/js/urweb.js b/lib/js/urweb.js
index 6b493c4f..357e4c1c 100644
--- a/lib/js/urweb.js
+++ b/lib/js/urweb.js
@@ -7,6 +7,7 @@ function needsDynPrefix() {
     return scripts.length == 0;
 }
 
+// Codepoint implementations brought from https://norbertlindenberg.com/2012/05/ecmascript-supplementary-characters/#String
 if (!String.fromCodePoint) {
     String.fromCodePoint = function () {
 	var chars = [], i;