--- a/README
+++ b/README
@@ -7,3 +7,12 @@
 If you find any code that is copyrighted by you or another party and the
 licience is in conflict with the LGPL please let me know and I will remove
 that code
+
+Hint:
+
+For those who have issues preprocessing the files (externsion *.m2pp)
+there are two tar-files containing these files in a manner that
+you should be able to compile them directly.
+
+ - preprocessed.GM2.tar for the GNU Modula compiler
+ - preprocessed.XDS.tar for the XDS Modula compiler