For example, suppose you want to subscribe to newsgroup `comp.sys.pdp11`.
1) The first step is to add a new line to `NEWSGROUPS.CFG` for the newgroup subscription. `NEWSGROUPS.CFG` is found in the email root directory (`/H1/DOCUMENTS/EMAIL` using the example settings.) Start `EDIT.SYSTEM` and use the `Open Apple`-`O` command to open the file `/H1/DOCUMENTS/EMAIL/NEWSGROUPS.CFG`.
2) Using `EDIT.SYSTEM` add a line to the file consisting of the newsgroup name, a space, the name of the mailbox you want to use to store messages, another space and the digit 0. For example, we may decide to use mailbox name `A.S.PDP11` for this newsgroup:
When the 'last message' field of the newgroup is zero, `NNTP65.SYSTEM` will download the most recent 100 articles from the newsgroup. It will then set the most recent article counter in `NEWSGROUPS.CFG` so that subsequent runs will retrieve new messages only.