Editing : Editing Clips and Selections : Trimming Clips : Trim to Fill Selection Commands

Trim to Fill Selection Commands
The Trim to Fill Selection commands let you automatically reveal underlying material in the gaps between clips, or before and after individual clips, as follow:
To trim from a start point to fill gaps:
1 With the Selector tool, select across at least one gap between clips.
2 Choose Edit > Trim Clip > Start to Fill Selection.
The start point of the clip behind the gap is automatically trimmed (expanded) to the previous clip, or as far as possible if there is not enough underlying material to cover the gap.
 
To trim from an end point to fill gaps:
1 With the Selector tool, select across at least one gap between clips.
2 Choose Edit > Trim Clip > End To Fill Selection.
The end point of the clip in front of the gap is automatically trimmed (expanded) to the next clip, or as far as possible if there is not enough underlying material to cover the gap.
 
To trim from a clip’s start and end points to fill the Edit selection:
1 With the Selector tool, make an Edit selection that includes the clip you want to trim out.
2 Choose Edit > Trim Clip > To Fill Selection.
The start point of the clip is automatically trimmed (expanded) to the Edit selection start, or as far as possible if there is not enough underlying material to cover the selection, and the end point of the clip is automatically trimmed out (expanded) to the Edit selection end, or as far as possible if there is not enough underlying material to cover the selection.
The Trim to Fill Selection command is the inverse of the Trim to Fit Selection command: where the Trim to Fill Selection command trims a clip out to match the Edit selection, the Trim to Fit Selection command trims a clip in to match the Edit selection.