Blue Book (CD standard) file system may also be included for compatibility with Mac OS computers. The mandatory files and directories include an autorun.inf file compatible with the Windows 95 AutoRun feature; a CDPLUS and a PICTURES directories; and an optional DATA directory. The term "enhanced CD" is also an umbrella term and a certification mark used to refer to different CD formats that support audio and data content, including mixed mode CDs, CD-i and CD-i Ready. Blue Book (CD standard) The Blue Book is a compact disc standard developed in 1995 by Philips and Sony. It defines the Enhanced Music CD format (E-CD,
Philips Records its classical artists, although classical recordings have also been issued on the regular Philips label. In the US, Philips eventually handled distribution and sales for Philips, Mercury, British Decca (sold under the London label in the US) and Deutsche Grammophon. In 1983, Philips became the first record label to issue compact discs, using digital recordings that had been recorded since 1978. Philips and its subsidiaries eventually re-issued many of its pre-digital stereo and mono recordings on compact disc. Philips and DuPont partnered in four CD manufacturing plants in Hanover, Germany; Blackburn in the UK (formerly the Philips Laservision Disc factory);