--- a/Matrix2_2.st	Fri Dec 13 21:32:18 2019 +0100
+++ b/Matrix2_2.st	Fri Dec 13 21:33:14 2019 +0100
@@ -1,5 +1,16 @@
 "{ Encoding: utf8 }"
 
+"
+ COPYRIGHT (c) 2018 by eXept Software AG
+              All Rights Reserved
+
+ This software is furnished under a license and may be used
+ only in accordance with the terms of that license and with the
+ inclusion of the above copyright notice.   This software may not
+ be provided or otherwise made available to, or used by, any
+ other person.  No title to or ownership of the software is
+ hereby transferred.
+"
 "{ Package: 'stx:libbasic2' }"
 
 "{ NameSpace: Smalltalk }"
@@ -13,6 +24,20 @@
 
 !Matrix2_2 class methodsFor:'documentation'!
 
+copyright
+"
+ COPYRIGHT (c) 2018 by eXept Software AG
+              All Rights Reserved
+
+ This software is furnished under a license and may be used
+ only in accordance with the terms of that license and with the
+ inclusion of the above copyright notice.   This software may not
+ be provided or otherwise made available to, or used by, any
+ other person.  No title to or ownership of the software is
+ hereby transferred.
+"
+!
+
 documentation
 "
     2x2 Matrix (2 dimensions).