extern char *comboLine;
extern Boolean partnerUp, twoBoards;
extern char engineVariant[];
+void SaveEngineSettings P((int n));
char *EngineDefinedVariant P((ChessProgramState *cps, int n));
void SettingsPopUp P((ChessProgramState *cps)); // [HGM] really in front-end, but CPS not known in frontend.h
int WaitForEngine P((ChessProgramState *cps, DelayedEventCallback x));