The information on registry keys propagated together with the program (the file "reg.dat") is shown as a tree and is divided on three basic categories: Applications, Windows 9x and Windows NT. There are more subcategories. User may easy move any subcategory to another category, change information stored in it, or delete needless one. Main advantage of Registry Tuner is that user easy can add new information to a data tree for further usage. Data files of regtune format can be freely distributed in any way. For using multiple regtune data files in the program there is "Load from file..." and "Save to file..." menus. If user wants to have one file with all available data, it is possible to gather many regtune data files into single one. The "Combine with file..." menu option will help you in this operation. For more information see the How to... topic. As the information for Registry Tuner is renovated and is supplemented often, visit our site (http://www.fixregistry.com/regtune/) for new versions of regtune data files. Also you are welcome with your own created data files. regtuner@fixregistry.com