Listing "hidden" formatting options

NOTE:I know there has been tons of threads already
Some threads ask how you remove the subject line or how do you make text bigger when you post so i'm compiling information for those not in the know. This is what I know so far:
- No subject line type a 0 (zero) in the subject line.
Those that are willing to share information on what they know please post here. Then I will post a link to this thread on the "Useful links for new knights" thread.

LOL
that's a lot of "strong" and code" there around ctrl-u. What a relief for copy and paste!

Just figured it would be of use because posters are repeatedly asking.

Just some additional testing. Turns out that you need to
PRESS ENTER
after you type in you "large text".

It seems that when you view the same page on an ipad, the text after a "large text" becomes bold for some reason. So as of now you just press enter (x2) after every "large text"

I confirm that you must put 1 "code" tag for every "strong" tag.

No subject line type a 0 (zero) in the subject line.
That's a secret. Hush hush. Wanna know how to make a blank comment? No, I refuse to tell you D:

I like this
If you ever find a weird formatting, you just
to see the source code of the page.ctrl-U
It's an universal shortcut for both chrome and firefox.