The Empty Control
The Empty control on the page designer is used as filler to create a space to the next control in the page designer.
The page designer automatically re-arranges all controls placed on the page and the Empty control enables you to create spaces on the page which the automatic re-arrangment of controls will respect.
Tip: On the page designer, double-click on a control to remove the control from the page and return it to the Available fields pane.