* Directly read, write zip archives without decompressing and recompressing them for the best performance.
* Add, copy, move and rename files in the zip archives. Any rom that you have is placed automatically in the correct zip.
* Recognize the text files added by rom sites and delete them.| Recognize the text files added by the rom dumpers and keep or delete them.
* It's safe. On all the zip operations any file removed or overwritten is saved in the `rom_unknown' `sample_unknown' directories and kept for future uses. This will prevent any unwanted remove operation.
* Generate differential rom sets.