For more information, see the following topics:Pre- and post-roll times appear as flags in the ruler that represents the Main Time Scale. When pre- and post-roll are enabled, the flags are green, otherwise they are gray.
Green Pre- and Post-Roll Flags (enabled) in the Main Timebase ruler Pre- and post-roll amounts can be entered in the Transport window, set from a track’s playlist or Timebase ruler, or by recalling a Memory Location.