These slides, which you are reading now, are produced by LENO. It is therefore possible to illustrate the
three views in a very concrete way. Either you can use the standard navigational facility to explore the different views,
or you can follow the explicit example links which we provide
Powerpoint can produce a bitmapped graphics version of a slide presentation. However, it takes relatively long
time to download such a page. Moreover, the navigational facilities are rather poor from the generated page.
It is also possible to install a special Powerpoint viewer, which makes it possible to show a powerpoint presentation
in an Internet browser. However, this requires explicit installation and a machine which allows such installation.
Finally, it is possible to convert a Powerpoint presentation to external formats, such as PDF. Again, this
requires a special reader program in order to access the material (Acrobat reader), and the resulting PDF material
is only rarely integrated in a good way with other resources on the Internet.
