A technical document recently posted on Apple’s developer site details Spotlight, the new desktop search technology due in the next release of the Mac OS.

But more than a collection of individual technologies that work
together, Spotlight gives you the ability to plug your application into the operating system and work with files in a totally new way. For example, if you were building an asset management application you could use Spotlight to find all of the files that match certain criteria rather than trying to slog through the file system yourself. Or, if your application specialized in supporting various kinds of workflows, you could use Spotlight to find all of the files that needed to be marked with a particular keyword. Once you get used to working with files in this new way, you’ll never want to go back.