Registry Toolkit performs search and/or replacement operations on the Windows 95/98/ME NT/2000/XP 2003 registry. You can search/replace in registry data, values, keys (or any combination) and specify the types of data to process. A browse function lets you can scroll through the registry to select a starting point for your search/replace. You can create and edit keys, values, & data, delete keys & values (after confirmation), and undo the last changes made. Output functions let you preview the changes that would be made by a replace in advance of actually making the replace. Replace preview can also be set up to let you interactively select specific replaces to be made in advance of the operation. This same possible is available for the undo function - you can reverse all or some of the last change made. Regular expression search/replace using a grep-like syntax is possible - no other utility does this. This application can also use DOS environment variables in search/replaces. You can import and export .reg files. The import function has a registry comparison preview that shows existing vs. new data. You can adjust what is displayed in the preview and eliminate some items from the operation before merging the data. A unique 'Operations' function can be used to copy, move, export (or delete) selected values to another location in the registry or a .reg file. Script & command line functions are available for automated &/or complex operations. Registry Toolkit will operate on a remote registry (if you have permission to do so). A print (w/ preview) function lets you print the display. Latest features include: Multiple 'undo' files that are named automatically. This provides a change history that you can use if you need to backtrack on one or more changes; The number of files to maintain is configurable via a registry setting (see the program hlp and readme.txt); The most recent operation can be reversed from the program interface via an 'Undo last replace(s)' function in the Edit Menu; The program can now list values &/or values/data under the highlighted key.