This field allows you to see the list of nodes to be deregistered before
 the actual deregistration is done.

 If you answer no, you are immediately asked if the specified nodes are to
 be deregistered, or if the operation is to be cancelled.

 If you answer yes, you are presented with the names and addresses of the
 nodes, before you are asked if the nodes are to be deregistered or if the
 operation is to be cancelled.