Please use [b]bold[/b] tags for subtitles etc and [i]italic[/i] tags for emphasis, ship names etc. A Word macro is available to convert normal formatting into tags.
Follow each paragraph with two returns—if you need a larger break, use a row of asterisks. On screen there's not much difference between a normal paragraph break and a slightly larger one.
All fiction on this site is edited before being posted, and the editor will always correct spelling, punctuation and grammar before it is allowed on the site. However, beyond this you select how thorough you'd like the editing to be.
Canon fics are those which can be considered part of Rogue Squadron's official history and events from these fics can be referenced from an official RPG.
They are subject to a much greater degree of scrutiny, and will not be posted as canon fics until they are considered completely accurate. Whether your fic is allowed to become canon or not is completely up to command, they may reject it if it conflicts with planned storyline, or for any other reason.
It is therefore strongly recommended that submissions don't much exceed 10,000 words.
Ownership of characters etc in a canon context is discussed in the Terms of Service. Make sure you understand these.