I'm not really a techie, but there fairly limited here, and I think it has to do with admin privileges, Nebhead can put links in his texts, so maybe Ft can too. I checked after using every link tag I knew, and he uses the standard one:

<a href="http://www.wotmania.com">wotmania</a>

<a href="http://www.cnn.com">This is CNN</a>

You can use that flat, it won't let me use the tag so I don't have to insert any spaces to make it thinks it's text. A lot of places you can actually use a lot of different tags to do the same thing, some are just 'deprecated' which I guess means old and possibly unsupported. I know it won't do some of the normal stuff with ordered and unordered lists, < ol> and < ul> which let's you screw with bullet points, and I've looked over a few of nebhead's posts to see if he uses anything else but I've never see [ ] or { } used in his messages, just < >

A couple others I know work but don't use much, bullets points and indents.

Bullets use 'li' for a tag, < li>, you don't actually need to bother with a < /li> for tags, the enter key breaks it

Cat

Dog

sheep

Geese

was just (minus spaces) -

< li>Cat
< li>Dog
< li>sheep
< li>Geese

you can center text with < center>text</ center>

This text will be centered.
You can also change fonts, this is Verdana

< font face="verdana">You can also change fonts, this is Verdana</ font>

This is Times New Roman in big orange letter

< font size=+2 color=orange face="TimesNewRoman">This is Times New Roman in big orange letter< /font>

This is Arial in big cyan letters, and yeah you o need the quotes on the "fontname", probably several different fonts available but I don't use many and I'd bet only common ones work
This is Vivaldi, size bumped up to make it legible

Besides hyperlinks, they're are some normal tags I'm used to using I can't here, like super and subscript I use over at some more sci/tech oriented forums for equations, <sub> and <sup> by the way. I'm sure there are others that work, but those are all the ones I ever want to use that actually work.

Ofcourse, for our purposes in quoting, you can actually cheat anyway, if you want a bunch of links in one message

Your most recent post

Your vote on day 1 for FT

And people can just click the 'view original post' link on the right of the quote box. Every message on the site has a number, this one for instance is 84887, and the little trick then is to look up the number (which is at then end of the web address)

http://www.readandfindout.com/rpg/messageboard/78250/

then just do a < quote id="78520"> random link title< /quote>

So if I want to reference your vote record from earlier today in a message I can just

Link to Vote Record