The "Topic" is X-Wing Miniatures Game. If you are making a post about X-Wing Miniatures Game, this is considered to be "On-Topic" and doesn't belong in the Off Topic section. You can make it in the general X-Wing Miniatures forum and stand tall and proud, knowing that you have created a topic in an approved section. You can even post in a specific sub-section if your post meets that criteria, for example a battle report, or list idea... etc.
If you have a post about something that is NOT about X-Wing miniatures game specifically... you might consider the Off-Topic section. Maybe you are looking for a good book, or want to talk about your favorite Ninja Turtle or Thundercat.
Or maybe you still want to talk about Star Wars, just not specifically this game. Like maybe you want to talk about Rogue One. That would be cool, but it should be Off-Topic.
The sheer number of Rogue One threads springing up in the general X-Wing miniatures discussion is baffling. Also baffling is the number of ON-TOPIC posts that get made in the off-topic section. I could complain more about them, but then I'd just come off as even more of a grumpy old man.
May the force be with you all.