+void DoUpdateDate(SimDate *date);
+void DoNewDate(SimDate *date);
+void DoResizeDate(SimDate *date, int w, int h);
+void DestroyDate(SimDate *date);
+void InitNewDate(SimDate *date);
+int ConfigureSimDate(Tcl_Interp *interp, SimDate *date,
+ int argc, char **argv, int flags);
+