This command links to the next program within the same PGC and optionally highlights a specified menu button.
A button value of 0 indicates no highlight. Programs within a PGC are numbered from 1. The DVD specifications
support a maximum of 255 programs per PGC and up to 36 highlight buttons per display menu.
Cells having cell commands are non-seamless by default. LinkNextPG can be present only in cell or button commands.
LinkNextPG cannot be present in the First-Play domain.
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.