This command links to the current 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.

This command is often used to repeat the playback of the current cell from the beginning after it ends. Commercial DVDs often use this command to repeat a motion menu, since only one cell is typically used to hold the motion menu contents. Cells having cell commands are non-seamless by default.

LinkTopC can be present only in cell or button commands. LinkTopC cannot be present in the First-Play domain.

Link to current cell in the same PGC
LinkTopC   Highlight button
DVD Command	Hex Encoding
LinkTopC,button 0	20 01 00 00 00 00 00 01

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 LinkTopC
2) Compare to another SPRM register and LinkTopC
3) Compare to a constant value and LinkTopC
4) SetGPRM and LinkTopC