-extern void initTicker (nat ms, TickProc handle_tick);
-extern void startTicker (void);
-extern void stopTicker (void);
-extern void exitTicker (void);
+void initTicker (nat ms, TickProc handle_tick);
+void startTicker (void);
+void stopTicker (void);
+void exitTicker (void);
+
+END_RTS_PRIVATE