rom nomenclature

[orntar]

i hope this isn't a dumb question, or not for this board...

i got a cd from a freind of mine with genesis roms on it of old games i played when i was younger. what does all the stuff at the end of a rom name mean? such as....
Knuckles Chaotix 32X (5) [!].zip

whats with the (5) and [!]? i have seen others such as (JUE) or (J). any info?

[TalkingOctopus]

Those roms were named using the Good Tools.

The guide that explains them can be found here:

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

[Gideon]

Ah, thanks for the explanation!  I had never even thought of asking this question before.