The html version could have a topic live index.
The txt version could have something like this (for past issue):
This issue topics:
* New Debian Project Leader elected
* Surveying the Debian community
* Release Update
* Debian to participate again in Google's Summer of Code
* Scientific study about Debian Project governance and social
organization
* Debian makes progress regarding reliability
* Call for contributions on Debian development infrastructure
* Debian feature requests wanted
* Debian GNU/Linux FAQ to be improved with Lenny
* Debian Lenny to be shipped with qmail and djbdns in main
* Planet Debian as mailing list?
* Co-operative Breathes New Life into Old Machines with Debian
* Debian Women Project
* status of Security Enhanced Linux (SE Linux) support in Debian
* New secondary Debian Account Manager (DAM) to handle workload.
* Groupware solution in Debian / not yet in Debian.
Please, continue to help us improve and make the DPN next edition,
including yourself more news too.