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Note. Deleting of marked objects may take significant time. Generally, it is executed as a background process. You can speed up this operation if you select the Block all operations to speed up the deletion option at the bottom of the form. In this case, the operation will have the highest priority and will be performed faster.
You can use the 
button to clear all the check boxes and the 
button to select all the check boxes. Manually you can clear or select a check box for any document or object.
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