diff --git a/firmware/lib/apps.h b/firmware/lib/apps.h
index 4f9be71..b026e15 100644
--- a/firmware/lib/apps.h
+++ b/firmware/lib/apps.h
@@ -3,6 +3,14 @@
 
 #include <inttypes.h>
 
+/* 
+ * REGISTER makro exploits special avr-libc startup code voodo. 
+ * This could be understood by reading
+ *  http://www.nongnu.org/avr-libc/user-manual/mem_sections.html
+ *
+ * */
+
+
 #define MAX_FUNS	16
 #define REGISTER(fun)	static void init(void) __attribute__ ((naked, used, section (".init8")));	\
 			void init(void) {								\