diff --git a/ts/docx/paragraph/alignment.ts b/ts/docx/paragraph/alignment.ts
index c019d8a546..672ee41bac 100644
--- a/ts/docx/paragraph/alignment.ts
+++ b/ts/docx/paragraph/alignment.ts
@@ -1,3 +1,4 @@
+// http://officeopenxml.com/WPalignment.php
 import { XmlAttributeComponent, XmlComponent } from "../xml-components";
 
 export type AlignmentOptions = "left" | "center" | "right" | "both";
diff --git a/ts/docx/paragraph/border.ts b/ts/docx/paragraph/border.ts
index f1c712662a..80f17504bc 100644
--- a/ts/docx/paragraph/border.ts
+++ b/ts/docx/paragraph/border.ts
@@ -1,3 +1,4 @@
+// http://officeopenxml.com/WPborders.php
 import { Attributes, XmlComponent } from "../xml-components";
 
 class Border extends XmlComponent {