[pstricks] Factor tree supporting comments

[Herbert Voss]

David Arnold schrieb:

> What I'd like to do now is to write some short explanatory text to  
> the right of the tree, each phrase at the same level as each level of  
> the tree.

http://tug.org/PSTricks/main.cgi?file=pst-tree/pst-tree

there is an example with text on the right side and a dotted
line (nearly at the end of the page)

Herbert