GUPU's screen consists of two windows. The left contains the
examples to be solved. The right contains help (read-only) texts with
links to other texts like so: \Hinweis{init}
. All interaction
is performed through these two windows.
GUPU's metaphor is very simple: The left window is like a
paper sheet containing at first only example statements. The student
adds more text and saves it from time to time by pressing the button.
Comments from the system or lecturer are written back into
the text after pressing
.
Now let's zoom into the 2nd example.