Apple Final Cut Pro 6 - Manual (Page 65)

64 Part II Learning About the Final Cut Pro Interface
To display thumbnails:
m Control-click any column heading other than Name, then choose Show Thumbnail from
the shortcut menu.
A thumbnail column appears with images for all video clips.
Control-click a column
heading, then choose
Show Thumbnail.
Thumbnails appear as
small images of your
video clips.