about copyAllTo:

Hi

I have the gut feeling that copyAllTo: is not really nice because unclear.
The comments are unclear on the "flattening"
It is unclear that it flattens the leaves or not.

I mean

A
   B
      x
   C
       D
           y
           z

A copyAllTo: K

do we get

K
   B
      x
   C
       D
           y
           z

or

K
   x
   y
   z

We got touched by such difference and the message name is not enough
intention revealing.

I would prefer a message

copyAsSuchTo:
copyLeavesTo:

What do you think?

Stef