Creates an effect similar to threading. Checks for unknown Newsgroups when posting.
Splits digests into multiple articles.
On an 80 column display, these will usually be abbreviated in some way. The method to change your mind and send mail is not obvious. Use the 'c'opy command to send a copy of the message to the author via e-mail, then use the 'a'bort command to abort and not post the article. The actual check is that you are required to make some change to the article before posting. You can cheat by just adding a blank line or deleting some of the included text.