ROMs info

This is my first time posting here :D, hi everyone, I have one question:In the name of the ROM, you see (M3), (M4), and some other kinds of extra info that I don't understand, can anyone please explain what they mean? all of them if possible, I think it's important that people know these things before downloading :D :D... Thanks for the help...

Mx where x is a number tells you how many languages there are in the rom.

Thnx, any info for other stuff like (iND) (XMS) (HR) etc... ?

Those are the group who did the dump, for more tags see:https://www.romulation.org/forum/index.php?topic=1359.0

Thnx a lot, I couldn't find those before :D..