Synchronizes all documents/objects in the selected sub-tree, even if there are no synchronization tasks listed. This option is displayed only when some particular object category is selected.
Synchronize selected/all objects
You can choose the objects to be synchronized using the check-boxes in the list and then click Synchronize selected or Synchronize all button. All objects can also be synchronized using the Synchronize all objects link above the list.
Delete selected/all
If you do not wish to synchronize some changes, you can delete them using the Delete selected or Delete all buttons.