1 files changed, 3 insertions, 0 deletions
diff --git a/tree.go b/tree.go
index 4b6e23b..1ead288 100644
--- a/tree.go
+++ b/tree.go
@@ -1,3 +1,6 @@
+// Copyright 2017-2025 WIT.COM Inc. All rights reserved.
+// Use of this source code is governed by the GPL 3.0
+
 package main
 
 /*