I was recently looking for some useful programs to put on my DS and I came across WabbitDS (a TI-83 graphing calculator emulator). Once I was done patching and got the game working, I inserted the SD card back into my comp to see what kind of new files were created. To my surprise, it deleted my Moonshl and _system_ folder and my DS_MENU_ files. In its place were two new files called < and =FFSTA.rt= and a hidden file called 66y=4.7