<P> There are many variants of the Smart Folder concept that can be seen in applications that use the Spotlight engine, usually identified by a gear symbol on a purple - hued icon . Examples include: Smart Mailboxes in Mail and Smart Groups in Address Book . </P> <P> Before Spotlight earlier versions of macOS had a similar concept in the iApps (iTunes and iPhoto), but these did not use the system - wide Spotlight engine . </P> <P> In November 2006, Microsoft released Windows Vista which allows users to save any search query as a Search Folder, a type of virtual folder . Search Folders are designed so that users are not required to remember where their files are stored . A Search Folder is not a physical folder, but is essentially an XML file that stores a defined query in a form that can be used by the Windows Search subsystem . Because of this, a Search Folder can be created anywhere that a normal folder can be created . A similar approach exists in Windows XP when the Windows Indexing Service is enabled, as a search can be saved as a . fnd file . However, a saved search query in Windows XP only saves a user's search criteria; users must still specify the location and perform the search again as results are not dynamic . </P> <P> Whenever a Search Folder is accessed, it returns results that are relevant to a saved search query; results manifest themselves as actual files and folders in storage . Search queries can be defined based on a number of parameters and properties, including all or part of a filename, specific dates, the content of the files themselves, associated metadata, specific file types, where files are located, and various other attributes . A feature called Query Composition allows searches to be based on other Search Folders to further refine results . </P>

Which of the following are virtual folders in windows 7