Snes rom name question?

[tapnout]

I was just wondering what all the letters and other stuff  after the rom name means?
Here a part of a list i copied and pasted so you guys know what i'm talking about.

Angelique Voice Fantasy (J) [h1]
Angelique Voice Fantasy (J)
Animaniacs (E) [f1][t1]
Animaniacs (E) [T+Fre]
Animaniacs (E) [T+Ger1.00_Star]
Animaniacs (E) [t1]
Animaniacs (E)
Animaniacs (J)
Animaniacs (U) [!]
Animaniacs (U) [f1]
Animaniacs (U) [T+Fre]
Animaniacs (U) [T+Ger1.00_Star]
Animaniacs (U) [T+Ita]
Animaniacs (U) [T+Por]
Animaniacs (U) [t1]
Anime (PD)

[Pyro]

I believe "U" stands for a United States release, and "J" is a Japanese release. I had a list somewhere of what the letters mean, but can't find it at the moment. If I stumble upon it I will post it here.

Pyro

[TalkingOctopus]

The roms are named using Goodtools convention.  The codes are here:

http://www.mameworld.net/easyemu/gtguide.htm#section5

[Pyro]

That's what I was refering to. Thanks TalkingOctopus!

Pyro

[tapnout]

Thanks guys.