Certain words in square brackets are interpreted as commands by the forum software. One of those commands is quote.
The structure, or syntax, of the command is (I’ll purposefully leave a space right after the first square bracket, otherwise the software will perform the quoting and you won’t be able to see the structure):
[ quote=Poster’s Name]The text you wish to quote.[/quote]
Typing the above line exactly as is, minus that leading space between “[” and “quote” will yield:
Originally Posted by Poster’s_Name
The text you wish to quote.
Pressing preview will display the quote so you can ensure before posting.
Try it out and let me know how it works for you.
Once you get it figured the other commands follow similar.