diff --git a/apps/bounce1/bounce1.c b/apps/bounce1/bounce1.c
index 1c96006..e7e6d92 100644
--- a/apps/bounce1/bounce1.c
+++ b/apps/bounce1/bounce1.c
@@ -2,6 +2,8 @@
     @author M. P. Hayes, UCECE
     @date   24 August 2009
     @brief  Simple bouncing dot program
+    @note   This program has deliberate magic numbers as
+    an exercise for students to replace.
     
     @defgroup bounce1 Bounce1 application
 */