+/* System Control */
+#define X_SYSTEM_POWER a5
+#define X_SYSTEM_SLEEP a6
+#define X_SYSTEM_WAKE a7
+
+/* Media Control */
+#define X_AUDIO_MUTE a8
+#define X_AUDIO_VOL_UP a9
+#define X_AUDIO_VOL_DOWN aa
+#define X_MEDIA_NEXT_TRACK ab
+#define X_MEDIA_PREV_TRACK ac
+#define X_MEDIA_STOP ad
+#define X_MEDIA_PLAY_PAUSE ae
+#define X_MEDIA_SELECT af
+#define X_MEDIA_EJECT b0
+#define X_MAIL b1
+#define X_CALCULATOR b2
+#define X_MY_COMPUTER b3
+#define X_WWW_SEARCH b4
+#define X_WWW_HOME b5
+#define X_WWW_BACK b6
+#define X_WWW_FORWARD b7
+#define X_WWW_STOP b8
+#define X_WWW_REFRESH b9
+#define X_WWW_FAVORITES ba
+#define X_MEDIA_FAST_FORWARD bb
+#define X_MEDIA_REWIND bc
+#endif