Deleting Objects
The Delete window allows you to select objects that match specific conditions (similar to the Transform window) and delete them all at once. To open the delete window, select "Delete..." from the "User Objects" ribbon button:
Select the type of object you want to delete from the drop down menu (marks, ...). Then select the conditions you want to apply. For example, if you want to select objects that have a specific color, check "Color" and choose the color you want the object to match. If you don't want to restrict the selection with a specific condition, leave it unselected. For example, if you want to delete objects belonging to any layers, leave the layer condition unselected.
Note: Objects individually locked from the chart (using the right click menu) will not be deleted unless you select "Delete Locked objects". Object belonging to a locked layer will never be deleted.