[shuttle]

Nice tool, but it is optimized to Kindle 3 and not to Kindle DX
And it fails by writing message to file. (sample commands)

  var home = kjs.getHomeDirectory();
  var f = new java.io.File(home, "test.txt");
  var ps = new java.io.PrintStream(f);
  ps.println("Hello, world!");
  ps.close();