/// <summary>
        /// Register interpreter commands
        /// </summary>
        static public void Register(EpsInterpreter interpreter)
        {
            interpreter.RegisterCommand("currentsystemparams", new CurrentSystemParamsOperand());
            interpreter.RegisterCommand("setuserparams", new SetUserParamsOperand());
            interpreter.RegisterCommand("handleerror", new HandleErrorOperand());
            interpreter.RegisterErrorCommand("handleerror", new DefaultErrorHandlerOperand());
#if DEBUG
            interpreter.RegisterCommand("debugwriteln", new DebugWriteLineOperand());
            interpreter.RegisterCommand("debugwritestack", new DebugWriteStackOperand());
#endif
        }