> Why it goes here ?, it's a rebuilder part...

It's part of a datfile description (as it is for years). You can define on set basis a prestring which is used during rebuilding. For example you can set rebuildto to "namco/mypacmanfiles" and roms of the set will be rebuild to rebuilderdestination/namco/mypacmanfiles/setname.


> what is it for ?

See above.


> what is the difference between romof and cloneof ? I know it's a mame problem

It's no problem. cloneof defines the parent set and romof points to either the biosset, the parent or to the set itself.


> At least, an idea of a feature, it's not a request... if you say no, i won't
> miss a lot. Well, what about the ability of emptying the download folder and the
> backup folder, for example, via right clic on profiler


I made a note...


Roman Scherzer