Deleting All Markers
In addition to deleting a single marker, you can delete all markers from your project in
one step. You can choose to delete all project markers or all object markers in a selected
To delete all project markers only
Choose Edit > Deselect All (or press Command-Shift-A).
Choose Mark > Markers > Delete All Markers.
To delete all markers in a given object
Do one of the following:
Select the object containing the markers you want to delete, then choose Mark > Markers
> Delete All Markers.