Main toolbar > Open Track View > Track View toolbar > Position Ranges
Graph Editors menu > Track View > Open Track View > Track View toolbar > Position Ranges
Keyboard > F4
Position Ranges switches the Track View to Position Ranges mode. The Track View toolbar to the right of the Lock Selection button changes to reflect the current editing mode. Position Ranges mode allows you to position range bars independently from their associated keys and produce special effects.
The process of adjusting a range bar independent of its keys is called decoupling the range. Positioning a range bar so it matches the first to last keys of a track is called recoupling the range.
You decouple a range bar for two reasons:
You want some keys at the start or end of an animation range to be ignored.
Keys outside of the range bar are ignored during animation playback. The keys outside the range still affect interpolated values inside the range, but the applied Out-of-Range type is used to animate time outside the range bar.
You want to add extra time before the first key or after the last key that is not affected by the applied Out-of-Range type.
Time beyond the first or last key of the track, but still within the range, uses the constant value of the nearest key within the range.
Procedure
To decouple a range bar from its keys:
On the Track View toolbar, click Position Ranges.
In the Track View Edit window, drag the entire range bar left or right of the keys or drag either end of the range bar to make it longer or shorter than the keys.
Using Out-of-Range types in conjunction with this procedure allows you to change the behavior of an animated loop. Positioning either end of a range bar changes the loop.
Interface
Position Ranges: Adjusts the relationship between a range bar and its keys.
To the right of the Lock Selection button, the Track View toolbar changes to reflect the current editing mode.