// This macro demonstrates how to use
// the Image Calculator in batch mode.

  requires("1.33n");
  setBatchMode(true);
  run("Clown (14K)");
  img1 = "'"+getTitle()+"'";
  run("Mandrill (70K)");
  img2 = "'"+getTitle()+"'";
  run("Image Calculator...", 
      "image1="+img1+" operation=Average image2="+img2+" create");
  run("Rename...", "title=Sum");
  setBatchMode(false);