+ * Additional GLUT Key definitions for the Special key function
+ */
+#define GLUT_KEY_NUM_LOCK 0x006D
+#define GLUT_KEY_BEGIN 0x006E
+#define GLUT_KEY_DELETE 0x006F
+#define GLUT_KEY_SHIFT_L 0x0070
+#define GLUT_KEY_SHIFT_R 0x0071
+#define GLUT_KEY_CTRL_L 0x0072
+#define GLUT_KEY_CTRL_R 0x0073
+#define GLUT_KEY_ALT_L 0x0074
+#define GLUT_KEY_ALT_R 0x0075
+
+/*