>On Jan 30, 2004, at 2:43 PM, Erica Sadun wrote: > >>Region coding is added at a manufacturing facility >>for replicated discs. > >I guess the region option in DVDSP is just a bit set in the DVD >master for the duplicators? Yes. (And it's usually set on a digital linear tape, not on a recordable disc) So is the Macrovision bit. -- Erica