Multiline signatures?

[MoonSong]

I really don't understand how signatures are supposed to work. The first time I tried to set one, the system told me it was wrong and refused to post a single line because it was too long. I can't seem to find how to post multiple lines in the signature. But I have seen many posters with a few lines and even pictures in there, How do you do that? is it a subscriber's feature or something?

 

[Rabulias]

The description for the Copper Community Supporter Subscription (http://www.enworld.org/forum/payments.php) says it includes "...up to 10 lines in your signature, including links,..." so I would assume so.

 

[Morrus]

I'm thinking of changing this to make it a little more generous, though I'm not personally keen on large sigs overtaking threads.