If you need to find a file, folder or other content on your Mac, Spotlight is the place to go. Spotlight's been a cornerstone OS X technology since Apple released OS X Tiger in 2005. Underneath the magnifying glass icon in the right hand corner of your Mac's menu bar, Spotlight yields a search field. And whatever text you enter into that field, Spotlight will try to match to files and folders on your Mac and any other hard drives connected to it. But it does more than that too. It'll also show you emails with matches to that search term, calendar events, dictionary entries, and it can even search the web. Spotlight operates by building an index of metadata associated with the files on your hard disk. As you add or remove data from your Mac, it continuously updates the indices it's built in the background, and Spotlight uses these files to search.
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