This command goes to the specified command line number. The minimum line number is 1
and the maximum line number is 128. The DVD specifications allow a maximum total of 128
commands per PGC. This total includes pre-commands, post-commands, and cell-commands
in the PGC.
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.