Thanks for the help! I will make a test thread in Off-Topic and just use preview to test out formatting.
You don't need to actually start new topic to test formatting, you can do such test anywhere with 'preview', just don't click 'post'.
Start a new topic only to test polls, self-moderation, locking-unlocking and moving to different boards etc.
Remember, Off-topic section may not be held in high regard, but it's still not a rubbish bin. When you're finished with testing delete topic if possible, if not - move to Bitcoin Forum > Other >
Archival, see lower left for "move" option.