  // This the macro that is run by the JAR_Demo plugin

   arg = getArgument();
   msg = "This macro is being run from a JAR file.";
   if (arg!="")
       msg = msg + "\nIt was passed the argument \""+arg+"\".";
   else
       msg = msg + "\nIt was not passed an argument.";
   showMessage("JAR Demo Macro", msg);
