Apple DVD Studio Pro 4 - Manual (Page 497)

Goto Command
The goto command provides a way to jump to a specific line in a script. This is usually
used in conjunction with a compare function, with the result determining whether the
goto command executes, or whether the script moves on to the next line.
Goto is useful when you build multiple jump commands into your script, because it allows
you to choose which jump command to execute by forcing the script to its line.
The only entry (other than the compare settings) is the Line Number value, which is a
number from 1 to 124.
Set System Stream Command
The set system stream command provides an easy way to set the audio, subtitle, and
video angle streams. You can choose to enable one, two, or all of the three streams. In
the case of the subtitle stream, you also choose whether or not it appears.
You choose between two modes to set the stream values:
• Immediate Value: Choose the streams directly using their pop-up menus. (Pop-up menu
values that say “not set” indicate that no assets are currently assigned to that stream.)
• GPRM Based: Choose a GPRM register from each stream’s pop-up menu.
Note: You can only choose 16-bit GPRM registers.
To configure the set system stream command
1 In the Script Command Inspector, select either the Immediate Value or GPRM Based
modes for stream selection by clicking the appropriate button.
2 Select the streams you want to control by clicking their checkboxes.
497 Chapter 20 Creating Scripts