How you might use the key word search feature

This feature, Search the Registry for Unwanted Entries, may help you find some registry keys that belong to a software. For example, you just un-installed an application, say "SuperApp". The executable file of the application was, say super.exe. You want to be sure that its uninstall program removed all application traces from the registry.

To do so, you can:

select the "search the registry for unwanted entries" option in Registry First Aid,
enter keywords "SuperApp" and "super.exe" to search for,
select to search in the Keys, Values and Data checkboxes,
select the "Search for ANY of the strings" switch,
run the search.

Registry First Aid will find any registry keys and values containing "SuperApp" or "super.exe" keywords. They may belong to the question application, or may not. By default all found entries aren't selected for removal. It's up to you to look through the list and select only those entries that belong to the application and you want to delete from the registry.

After you selected items for removal and set their correction to "Delete the entry" or "Cut invalid substring", click the Next button to make registry changes.

That's the main goal of the Search the Registry for Unwanted Entries feature. Of course, you may find another use for it, not only deleting uninstalled application traces.