Some people have had trouble printing the tutorial, although most people managed. I have renamed the NSC93HO.PS file to NSC93A4.PS and made a slightly different NSC93US.PS version available, which won't ask you to load A4 paper in the printer tray and produces better centered output. I probably should replace it with a version formatted for US paper, but the file is on a PC at home so I can't do it now. To avoid bad surprises, given the size of the file, NSC93HO is no longer available. You have to use one of the two new names. Eric