What do the envelope icons mean?

[Devidramon]

I'm sure it's in the FAQ, but the FAQ isn't working. For me, anyway. So what do the envelope icons by topics mean?

[Jeebs]

Look at the bottom of the page in a forum.

[James]

[color=royalblue]Yep, if you look at the bottom of the page in a forum, you'll see little post indicators. They'll tell you what the envelopes represent. :)[/color]

[Axel--Ignition]

[i]I've been wondering what the dots mean, I don't see them on there...[/i]

[Sara]

If you've posted in a topic, there's a dot.