+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 *);