> It's lame, I know, but I don't understand exactly the meaning of set-subfolders.

A set is a collection of roms. Like a folder on your harddisk. It can contain files and subfolders. So a set can have roms, samples, diskimages...and now a set can also have subfolders.
Like:

pacman\rom1
pacman\rom2
pacman\subfolder1\rom1
pacman\subfolder2\rom1
pacman\subfolder1\SubSubfolder1\rom1

etc...It's not needed for MAME, since MAME sets don't have subfolders.
Other systems have sets with folder structures. Image a datfile for a floppydisk of an Amiga system for example. You might find subfolders on that disk containing fonts or a subfolder for tools etc. If you want to keep one disk as a set, you have to keep that folderstructure. With ClrMamePro before 3.50 it wasn't possible to check/rebuild such sets, since ClrMamePro didn't look in set-subfolders. Everything was plain root based. Now it's possible and a lot datfile creators/rom collectors jump happily through their room.


No need for a handedit datfile. Dir2Dat supports subfolders...and it's the job of datfile writers to use or not to use them. They only use them when they are necessary of course.

Roman Scherzer
ClrMamePro