public void run(String arg) {
		if (IJ.altKeyDown()) {
			if (arg.equals("copy"))
				arg = "scopy";
			else if (arg.equals("paste"))
				arg = "spaste";
		}
  		if (arg.equals("copy"))
			copy(false);
  		else if (arg.equals("paste"))
			paste();
  		else if (arg.equals("cut"))
			copy(true);
  		else if (arg.equals("scopy"))
			copyToSystem();
		else if (arg.equals("showsys"))
			showSystemClipboard();
		else if (arg.equals("show"))
			showInternalClipboard();
	}