It is simple, no complex computer scripting or programming knowledge of C++ or C# required. It is easy, 1, 2 and 3 and your secret files are gone forever. It is ultra fast. This is one of the key features of this product that put's it over leading marketers. PFD has been tested against other commercial products and here are the results. PFD deleted 30 GB in less than 10 seconds. The other file deleter took up more than two hours to wipe away that huge chunk of data. PFD also can delete multiple files and folders, just drag 'N' drop. PFD has a very simple drag 'N' drop function. You don't even need to open PFD to delete files. Just find some useless files, drag them in to the 'Delete Me' on your desktop, and ka-boom, they are all gone within seconds.