how to retain different views in outline mode

[GJvdS]

I am often working on large documents in outline mode, using the buildin headers.


Often I have to move sections using their headers. In that case I open 2 windows on the same document, say W1 and W2. I want these windows to keep their own view on the document.
For instance, when I open a heading in W1 I want (expect) it to stay closed in W2. However, as it is now, W2 is synchronized with W1 and opens the heading also.
The only operation which is not synchronized is scrolling.

How can I retain W1 and W2 their different views on the same document in outline mode?