Hey all. I often see things such as (U), (!), (J), and so forth at the end of filenames on my friends' R4. What do they mean? I can guess that (J) means Japanese and (E) means English, but what about (U) and (!)? Do they have any importance? Do I need to make sure not to get software with certain symbols? My first ever DS flashcard (the EDGE) is in the mail as we speak, and I'm new to the whole GBATemp "scene", if you will. Any help is much appreciated.