What's the difference between performing an edit and trimming an edit? An edit adds new material to a sequence; a trim adjusts previously assembled sequence material. The development of nonlinear editing has expanded the repertoire of trim edit types. Some trim edit types (like Ripple and Roll) date back to the tape-to-tape days of video editing; others (like the Slide edit) could not have existed before the advent of nonlinear systems.In this chapter, you'll learn about the types of trim edits available in Final Cut Express. Each can be performed in a variety of ways (with tools, with timecode entry, and with keystrokes) and in a few different locations (the Timeline, the Trim Edit window, and the Viewer), so you'll learn how and where you can perform each type. This chapter also introduces the Trim Edit window, a specialized work environment for making fine adjustments to your edits.Note that when editors talk about performing certain types of edits, the edit type is used as a verb, as in "Roll that cut forward 30 frames." That's easier to say than "Perform a Roll edit on that edit point, which will move the edit point forward 30 frames." In the editing suite, time is money.