The Orange Book defines CD-Recordable discs with multisession capability. Part I defines CD-MO (Magneto Optical) rewritable discs; Part II defines CD-WO (Write Once) discs; Part III defines CD-RW (Rewritable) discs. All three parts contain the following sections :

  • Disc specification for unrecorded and recorded discs.
  • Pre-groove modulation
  • Data organisation including linking
  • MultiSession and hybrid discs
  • Recommendations for measurement of reflectivity, power control etc.

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