This command links to the previous cell within the same PGC and optionally highlights a specified menu button. A button value of 0 indicates no highlight. Cells within a PGC are numbered from 1. The DVD specifications support a maximum of 255 cells per PGC and up to 36 highlight buttons per display menu.

Cells having cell commands are non-seamless by default. LinkPrevC can be present only in cell or button commands. LinkPrevC cannot be present in the First-Play domain.

Link to previous cell in the same PGC
LinkPrevC   Highlight button
DVD Command	Hex Encoding
LinkPrevC,button 0	20 01 00 00 00 00 00 03

This command can be combined with the Compare GPRM operations for conditional branching. When combining, this command is executed only if the result of the comparison is true.

1) Compare to another GPRM register and LinkPrevC
2) Compare to another SPRM register and LinkPrevC
3) Compare to a constant value and LinkPrevC
4) SetGPRM and LinkPrevC