So I'll just tell you this, cuz you should know it...
To quote someone without clicking on "Reply with quote", you can write
and at the end, write it the same way, but put a / after the first square bracket.
It looks like this
To put a line over what you said, you do the same, but write and then at the end but with a [/ instead of [ in the beginning.
(It looks like this )
To make a spoiler tag, you do the same as the above but write