An application run from the command line.
||Tree is a class representing a kind of generalized tree
that the user wishes to draw on a graphics plane or
print on some page (or graphics plane).
||Canvas on which to paint the tree.
Here is a tree expression:
"[a # [[b # [[c # [[d # ]]],[e # ]]],[f # ],[g # [[h # ]]]]]"
It 'represents' the following tree:
/ | \
b f g
/ \ |
c e h
It is assuemed that some other program will correctly
generate the tree expression.
||A TreeScrollFrame is a nice frame that paints its
||A TreeServer listens for a connection from a client at
a port (3333).
||A TreeViewerThread handles client's requests to draw