hello, click on the thumbnail
to see the picture on the screen. Click on the (big)-picture to
see the thumbnails. --- and then, --- click on the magnifying glass
to see the best definition of the same picture for printing purposes.
(Right-click on the "big" picture and select: "save-as")
click on the picture ---
this is a link to David Beard's chapter --- (click on the same thumbnail
in the new left-frame)