diff --git a/NOTES.md b/NOTES.md
index 909e649..d8ee5a7 100644
--- a/NOTES.md
+++ b/NOTES.md
@@ -24,6 +24,8 @@ uses afterSetExtremes event on xAxis to load data, which then set's it via setDa
 Stacked area chart:
 https://web.archive.org/web/20200109053708/https://www.highcharts.com/demo/area-stacked
 
+Running Python code in browser:
+https://github.com/brython-dev/brython
 
 Graphs
 ------