Arranging : Arranging Clips : Locking Clips : Edit Locking Clips

Edit Locking Clips
If you have a clip or group of clips that you want to protect from being inadvertently edited, you can Edit lock them. Clips that are Edit-locked cannot be edited (such as cutting, deleting, separating, trimming, or adjusting clip gain) or moved to a different time location. Copied edit-locked clips can be pasted to any other track or time location, but the copy will also be Edit-locked at the new time location.
To Edit lock (or unlock) a clip:
1 With the Time Grabber, select the clip or clips to Edit lock (or unlock). The clips can reside on multiple tracks.
2 Choose Clip > Edit Lock/Unlock.
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Press Control+L (Windows) or Command+L (Mac) to Edit lock or unlock the selected clip.
 
When Edit-locked, a small Edit Lock icon appears in the clip and it cannot be moved, deleted, or edited. If you attempt to perform edits on a locked clip, Pro Tools alerts you (see Allowing Editing of Edit-Locked Clips).
In Shuffle mode, Edit-locked clips, and all clips occurring after the locked clip, are not displaced when other neighboring clips are moved.
On tick-based Elastic Audio-enabled tracks, Edit-locked clips conform to tempo changes, but not other Elastic Audio processing (such as Quantize or manual warping) can be applied.