[O] Per-window visibility cycling

[Bob Newell]

This likely has been asked in the past but I didn't find it so please
allow me :)

Is visibility cycling per-buffer and not per-window? 

I ask because I want to do a horizontal split of a window containing an
org-mode file. Then I want to do a certain level of visibility cycling
in the left side to sort of make an index. On the right side, I want to
open/close various tree branches without affecting the left side.

But the two always seem to stay in sync with respect to visibility.

Any ideas appreciated.

-- 
Bob Newell
Honolulu, Hawai`i
* Sent via NoGnus 0.18-Emacs 23.3-Linux Mint 13 *