Apple Final Cut Pro 7 - Manual (Page 1423)

RT Pop-Up Menu in the Timeline
This menu only shows you real-time options available for the current sequence. For
example, pull-down pattern options only appear in the RT pop-up menu under appropriate
circumstances (such as a 23.98 fps sequence with external video set to output to a 29.97 fps
format).
RT pop-up menu
Because the settings in the RT pop-up menu and the Playback Control tab are almost
identical, it is often more convenient to access the RT pop-up menu directly from the
Timeline.
1423 Chapter 84 Using RT Extreme