[R] Multiple regression trees

[fietz@dionea.ch]

Dear list,

I'm quite new in R, but I'm working with multiple regression trees and I
would like to know a couple of things:
1. how can I label the regression tree with the number of node (each node
should be labled with its number)
2. I like to know for each end node (leaves) the number of occurency for
each response variable (species) that falls in that group.The tree-plot
gives me only the number of sites that falls in each leave.

Thank you in advance
Annette