Editing : Edit Modes and Tools : Scrub Trim Tool

Scrub Trim Tool
(Pro Tools HD and Pro Tools with Complete Production Toolkit Only)
The Scrub Trim tool is a convenient tool for auditioning material (on up to two tracks) to find a trim point. You can drag in a track to hear the audio information, then trim at a specific location by releasing the mouse button.
This action creates a new clip. Note that the Scrub Trim tool changes into a “right trim” or “left trim” shape as it is placed over the right or left side of a clip. To reverse the direction of the Scrub Trim tool, press Alt (Windows) or Option (Mac) before you click the clip.
 
Scrub playback speed and direction vary with controller movement. Scrubbed audio is routed through the track signal path, so you hear any effects in the signal path.
To scrub trim a track:
1 Do one of the following:
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– or – 
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Right-click on any track and select Tools > Trim Tools > Scrub.
The tool changes to a speaker with a bracket.
2 Drag within a track to the left or right. Audio from a scrubbed track is routed through the track signal path, including any DSP (AAX and TDM) effects. When you locate the trim point, release the mouse button to trim the clip.
To scrub trim two tracks, drag with the Scrub Trim tool between two adjacent tracks.
To scrub with finer resolution (without having to zoom in), press Control (Windows) or Command (Mac) while scrubbing.