What is the main function of the Track Lock Tool?

The main function of the Track Lock Tool is to prevent any changes to the locked track. When a track is locked, it ensures that none of the clips within that track can be accidentally edited, moved, or deleted. This is particularly useful when working on complex timelines, where you might have multiple tracks and want to maintain certain elements unaltered while making adjustments elsewhere. By locking a track, you can focus on editing other parts of your sequence without the risk of unintentionally affecting the locked content. This functionality is essential for maintaining the integrity of your project, ensuring that critical parts of your video remain secure throughout the editing process.