[Pan-users] hierarchical view?

[Woo Hoo]

This is a newbie question about pan. I'm using pan 0.133
on linux.

In my headers pane, I have "thread headers" turned on. If I select
"show matching articles," I get something like this:
  . Re: cabbages and kings (2)  
    Re: cabbages and kings
    Re: sealing wax
    Re: sealing wax
  . Re: sealing wax (1)
    Re: sealing wax
    Re: sealing wax
The "." symbols represent little triangles. If I click on them, I
get replies to that post.

Is there some way to make pan show me this hierarchy at a higher level?
In other words, I want to be able to "zoom out" so that what I see is
this:
  . Re: cabbages and kings
  . Re: sealing wax
Otherwise I find it very difficult to see what's going on in a busy
newsgroup. If there are 10 threads running at once, and each one is 
listed in the GUI with 50 different lines, then I have 500 lines in
my header pane that I have to scroll through. I also can't see the
nesting of the hierarchy. Is there any way to get it to display a
tree structure of some kind, like this?
  Re: cabbages and kings
    Re: cabbages and kings
    Re: cabbages and kings
      Re: cabbages and kings
      Re: cabbages and kings
      Re: cabbages and kings
      Re: cabbages and kings
    Re: cabbages and kings  

Thanks in advance.

        -Ben