Apple Logic Pro 9 - Manual (Page 533)

Moving Flex Markers and Time Stretching
When you move flex markers, the audio material will be time-stretched, but the results
depend on which flex marker you move and where you move it.
Consider the following two examples:
• When you move a flex marker to the left: The audio material is time-compressed up to
the preceding flex marker, the preceding tempo marker, or the region start position.
The audio material is time-expanded up to the following flex marker or the following
tempo marker (which can also be the region end position).
• When you move a flex marker to the right: The audio material is time-expanded up to
the preceding flex marker, the preceding tempo marker, or the region start position.
The audio material is time-compressed up to the following flex marker or the following
tempo marker (which can also be the region end position).
Note: You can reset a flex marker by Control-clicking (or right-clicking) the flex marker,
then choosing Set To Neutral Position from the shortcut menu.
533 Chapter 16 Flex Time Editing