Locking Events
If you want to make sure that you do not edit or move an event by accident, you can lock it.
Procedure
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Do one of the following:
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Select the events, and select to lock the selected events.
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Click the padlock button in the track list or in the Inspector to lock all events on a track.
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Result
The events are locked. This is indicated by a padlock symbol.
To unlock an event, select the event and select .