Index: src/wp-admin/custom-header.php
===================================================================
--- src/wp-admin/custom-header.php	(revision 40311)
+++ src/wp-admin/custom-header.php	(working copy)
@@ -1320,6 +1320,7 @@
 	}
 
 	/**
+	 * This function gives the details of header default images if it is set.
 	 *
 	 * @return array
 	 */
@@ -1360,6 +1361,7 @@
 	}
 
 	/**
+	 * This Function returns the previously uploaded header image details. 
 	 *
 	 * @return array
 	 */
