I think he means using the graphics tablet. There is an electronic pen/pencil which is probably attached to the monitor of somewhat like a computer. I've seen one before but I haven't touched it. You can point with a pen to the monitor screen to do any like tracing or sketching. I think the graphics tablet is probably used for doing art work. To me, mostly architecting, drawing, sketching, etc.EDIT: If you don't know what it is, you can check it on youtube. I forgot that the name is Wacom. There're lots of graphics tablet to view.