void S9xPutImage (int width, int height);
void S9xParseDisplayArg (char **argv, int &index, int argc);
void S9xToggleSoundChannel (int channel);
-void S9xSetInfoString (const char *string);
+void S9xSetInfoString (const char * fmt, ...);
int S9xMinCommandLineArgs ();
void S9xNextController ();