Re: Suggestion: *Group* SPC to show only new articles?

[<jari.aalto@poboxes.com> (Jari Aalto+list.ding)]

| 1998-08-24 Kai Grossjohann <grossjohann@amaunet.cs.uni-dortmund.de> list.ding
| >>>>> <jari.aalto@poboxes.com> (Jari Aalto+list.ding) writes:
| 
|   > like to see only new articles when I enter a group. It seems that
|   > giving a number still doesn't give /only/ the new articles.
| 
| Hm.  Well, ticked articles are made so that they are always shown.
| You might want to use `/ m SPC RET' to only show the unmarked messages
| after entering a group.  It should be simple to write a function which
| uses RET or SPC to enter a group then the above command to unshow the
| ticked articles.

All that of course works, but I would like to avoid the phase or
Creating Large Summary buffer altogether. I'm looking for speed here.
Many of my groups have 10's of ticked (in work groups, hundreads) 
articles and this mean lot of extra work for Gnus, and it slows
down Getting the Summary displayed. Limiting is another step still.

Gnus must know which articles are new, so building summary based on
them only should be trivial. And when combined with

    (gnus-fetch-old-headers nil)

that'd be the fast access to new articles.
What gnus functions variables is needed here?

jari