Index: exposurses.c
==================================================================
--- exposurses.c
+++ exposurses.c
@@ -1,5 +1,7 @@
+/* This file based on menu_scroll.c from:
+   http://tldp.org/HOWTO/NCURSES-Programming-HOWTO/intro.html */
 #include <curses.h>
 #include <menu.h>
 
 #define ARRAY_SIZE(a) (sizeof(a) / sizeof(a[0]))
 #define CTRLD 	4