diff --git a/hdr.tex b/hdr.tex
index e543973..0c31325 100644
--- a/hdr.tex
+++ b/hdr.tex
@@ -157,3 +157,7 @@
 % *****************************************************
 
 \end{document}
+
+%%% Local Variables:
+%%% TeX-engine: luatex
+%%% End: