YouTube Comment FONT HACK, BOLD TEXT, AND ITALIC TEXT??

CHECK THIS OUT!
http://www.youtube.com/watch?v=u2zV_YmnI2A
On the comments, go to page 2 or 3, and you'll see the guy JereHakala with his font bold and Italic!
How can you go this?
Also, if you look - I was testing something out - and I got something.
But anyway- help!

html, who knows.

does it matter?

my mac sucks, it's just a bunch of boxes kthx

Inu wrote:html, who knows.

does it matter?

my mac sucks, it's just a bunch of boxes kthx

my pc sucks just a bunch of boxes

You do unicode.

But how? Can I have an example, like how to do it or something like it exactly?
EDIT:
I made a little txt document set of the whole alphabet in a other Unicode (symbol) font. (Blackboard Bold)
http://www.mediafire.com/?i9nryjxzhpa1r22

zip wrote:But how? Can I have an example, like how to do it or something like it exactly?
EDIT:
I made a little txt document set of the whole alphabet in a other Unicode (symbol) font. (Blackboard Bold)
http://www.mediafire.com/?i9nryjxzhpa1r22

It worked for me

http://decodeunicode.org/en/mathematical_alphanumeric_symbols

How do I even use that?