A Standard CD-ROM format developed by PhilipS for CD-i. It iSISO 9660 compliant and uSeS mode 2 form 2 addreSSing. It can only be played on driveS which are XA ({Extended Architecture}) compatible. Many Green Book diScS contain CD-i applicationS which can only be played on a CD-i player but many otherS contain filmS or muSic videoS. Video CDS in Green Book format are normally labelled "Digital Video on CD" Green Book waS obSoleted by White book CD-ROM in March 1994. (1994-11-02)