Arranging : Time, Tempo, Meter, Key, and Chords : Tempo Operations Window : Stretch

Stretch
The Stretch page in the Tempo Operations window lets you select a clip of tempo events and apply them to a larger or smaller selection area.
 
 
Advanced
When this option is selected, the selection range changes to the Main Time Scale format, and additional and modified options become available.
Selection Start and End
Specifies the range of tempo events that you want to modify. When an Edit selection is made, the Start and End fields will display the selection boundaries.
Stretch To End
Specifies a new end point for the clip to which you want to apply the selected tempo events. Changing the end point causes the Stretch percentage to change.
Stretch To Start (Advanced Option)
Specifies a new start point for the clip to which you want to apply the selected tempo events. Changing the end point causes the Stretch percentage to change.
Stretch
Specifies the percentage of time for the the selected tempo events to cover.
Preserve Tempo after Selection
If selected, the previous tempo setting that was in effect at the selection end point is preserved after the selection. If unselected, the last tempo event created by the tempo operation continues to the end of the session, or until the next tempo event beyond the selected range.