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Resize regions in Logic Pro for Mac
You can shorten both audio and MIDI regions so that only part of the region plays. You can lengthen MIDI regions to add silence to the beginning or end of the region. In addition, you can resize the common edge of two adjacent regions to control the transition between them and remove overlaps.
You can also move and resize regions numerically by opening an Event Float window. For more information, see Use the Event Float window in Logic Pro for Mac.