diff --git a/developer/src/common/web/utils/src/types/keylayout/keylayout-xml.ts b/developer/src/common/web/utils/src/types/keylayout/keylayout-xml.ts
index 69c4a849dd..e5919c073f 100644
--- a/developer/src/common/web/utils/src/types/keylayout/keylayout-xml.ts
+++ b/developer/src/common/web/utils/src/types/keylayout/keylayout-xml.ts
@@ -1,4 +1,12 @@
-
+/*
+ * Keyman is 2025 copyright (C) SIL International. MIT License.
+ *
+ * Created by S. Schmitt on 2025-06-12
+ *
+ * The interfaces in this file are designed with reference to the mapped
+ * structures produced by xml2js when passed keylayout .xml file.
+ * The prefix KL is stands for 'Keylayout'
+ */
 
 export interface KeylayoutXMLSourceFile {
   /**