Digital library is a special library with a focused collection of digital objects that can include: text, visual material, audio material, video material, stored as electronic media formats, along with means for organizing, storing, and retrieving the files and media contained in the library collection. Digital libraries can vary immensely in size and scope, and can be maintained by individuals, organizations, or affiliated with established physical library buildings or institutions, or with academic institutions. Digital content may be stored locally, or accessed remotely via computer networks.