[pstricks] Tree

[Pedro Jorge Caridade]

Hi everybody

I'm preparing some tree with the command \pstree. Due to the size of the
tree, I would like to know if it is possible that one of the arm coming
from the root could be bigger that the rest. Pictorially, it's something
like this:

           A

      B


              C   

where A is the root, B and C are branches from A (connected, of course).

Thanks
Pedro