NPLviewer is launched like this :
c:\...> java grtree.NPLviewer fn
where fn is the correspondence
filename of the file containing the
tree expression that should be drawn each
time the view button is pushed.
Here is a tree expression:
"[a # [[b # [[c # [[d # []]]],[e # []]]],[f # []],[g # [[h # []]]]]]"
It 'represents' the following tree:
a
/ | \
b f g
/ \ |
c e h
|
d
It is assuemed that some other program will correctly
generate the tree expression.