[O] Edit current tree-node?

[Fredrik]

In babel you can push C-c ' and a new buffer opens to edit the current 
code in a new buffer. Does something similar exist to edit a part of an 
org-file?
Say I have the following :

* Tree 1
** SubTree2
* Tree 2
* Tree 3
My cursor is on SubTree2 and I would like to open that part in a new 
buffer to brainstorm around it and then put the changes back in to the 
original file.

Regards,

Fredrik