improve license notice

[evhz] / evhz.c

diff --git a/evhz.c b/evhz.c
index c7ba33d5e59637d01822648767b89a8c3603364d..950f727fcc6a7cd379fc76e153420878bfed6208 100644 (file)
--- a/evhz.c
+++ b/evhz.c
@@ -1,3 +1,9 @@
+/* The license of this program  follows the GNU license recommendations at */
+/* https://www.gnu.org/licenses/license-recommendations.en.html. They */
+/* recommend that small programs, < 300 lines, be licensed under the */
+/* Apache License 2.0. This file contains or is part of one or more small */
+/* programs. */
+
 /* Copyright (C) 2016 Ian Kelling */
 
 /* Licensed under the Apache License, Version 2.0 (the "License"); */