If the header extends over several lines, then you can either have the header all on one line, or hard wrap it with returns at the end of each line, and spaces at the start of the second and subsequent lines. The second panel is used to enter extra news headers that are added to news articles that you post with the current personality. The third panel is used to enter extra mail headers that are added to email messages that you send. Tuning Personality Use Most of the time, when you post new articles, send email, or reply to existing articles, you'll want to use the Personality that is specified as the default, by the checkbox next to its name in the Personalities dialog box. If you want to specify a different personality for a particular message, you can change to that one using the popup menu in the message window.
Filters can set a personality to use when replying to matched articles.
Otherwise, if Group Settings exist for the group being posted or replied to, then the Personality is taken from the Group Settings. Otherwise, the default Personality is used. Sometimes, you might want to post with a different personality to some set of newsgroups, perhaps because you act in a technical support role on those groups. In this situation, you can use Group Settings to specify that posts or replies in those groups use a different Personality from the default. On the 'Posting Messages' panel of the Group Settings dialog is a popup menu that allows you to select a Personality to use when posting new messges, or replying to messages in a given newsgroup or set of newsgroups.