+char *getLoginName(void);
+char *getHomeDir(void);
+char *getPath2(char *, char *);
+char *getPath3(char *, char *, char*);
+char *getStringCopy(char *);
+char *getStringToLower(char *);
+void MarkTileDirty(int, int);
+void GetOptions(char **);
+void Error(int, char *, ...);
+void *checked_malloc(unsigned long);
+void *checked_calloc(unsigned long);
+char *getKeyNameFromKeySym(KeySym);
+char *getX11KeyNameFromKeySym(KeySym);
+KeySym getKeySymFromX11KeyName(char *);
+char *getJoyNameFromJoySymbol(int);
+int getJoySymbolFromJoyName(char *);
+int getJoystickNrFromDeviceName(char *);