diff --git a/addons/CSScriptAddon/CSScriptAddon.vb b/addons/CSScriptAddon/CSScriptAddon.vb
index dae149c..2a1b909 100644
--- a/addons/CSScriptAddon/CSScriptAddon.vb
+++ b/addons/CSScriptAddon/CSScriptAddon.vb
@@ -1,4 +1,7 @@
-Imports System.ComponentModel.Composition
+'this addon implements the C# scripting feature of mpv.net,
+'it is based on CS-Script: https://www.cs-script.net/
+
+Imports System.ComponentModel.Composition
 Imports System.IO
 Imports System.Windows.Forms