I added some new BB tags:
Press "Quote" for this post to see how they work.
Strike-out
Inserted Text (hover) and Deleted Text (hover) for inserting/deleting during edits. This is an advantage in long threads that you might come back to and alter, because it gives people an idea when different changes occured (the "last edited on" text is not so great for that.)
Denominator over-lines text; handy for quick equations at the start of the line, or for marking up modulus.
[hide]This tag is for putting spoilers in threads about new films, books etc; or for posting the answer to a puzzle etc.[/hide]