FAQ 5 - Composing messages

FAQ 5-1: What are the basic commands I need to know for sending mail and postings?
FAQ 5-2: How to enable automatic word-wrap when composing messages?
FAQ 5-3: How to set stuff like From, Organization, Reply-To, signature...?
FAQ 5-4: Can I set things like From, Signature etc group based on the group I post too?
FAQ 5-5: Is there a spell-checker? Perhaps even on-the-fly spell-checking?
FAQ 5-6: Can I set the dictionary based on the group I'm posting to?
FAQ 5-7: Is there some kind of address-book, so I needn't remember all those email addresses?
FAQ 5-8: Sometimes I see little images at the top of article buffer. What's that and how can I send one with my postings, too?
FAQ 5-9: Sometimes I accidentally hit r instead of f in newsgroups. Can Gnus warn me, when I'm replying by mail in newsgroups?
FAQ 5-10: How to tell Gnus not to generate a sender header?
FAQ 5-11: I want Gnus to locally store copies of my send mail and news, how to do it?
FAQ 5-12: I want Gnus to kill the buffer after successful sending instead of keeping it alive as "Sent mail to...", how to do it?
FAQ 5-13: People tell me my Message-IDs are not correct, why aren't they and how to fix it?