How to edit the existing tree?

valeri@na.infn.it
Sat, 22 Nov 1997 17:42:38 +0100 (MET)


Dear Root,

If I have the tree T with 1 branch "branch1" and several
filled events "nevent" in file f.root how to:

1. Update the vertical structure if the tree
- add new events to the file
- change the existing event in the file
- insert a new event into the file (not in the last position)
- delete the existing event in the file

2. Update the horizontal structure
- add the new branch to the tree in the file
- fill this new branch event by event

Is it possible to have branches of the same tree in the separate
files?

Thanks
Valeri Tyukov.