extern char *recentEngines;
extern char *comboLine;
extern Boolean partnerUp, twoBoards;
+extern char engineVariant[];
+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));
void Load P((ChessProgramState *cps, int n));