Differences between Dialog & Design_Dialog

dialog:
The Dialog is a special kind of window with a form in the body and a button group in the footer. It is typically used to edit content, but can also just display information.

design_dialog:
design_dialog (nt:unstructured) -specifies the design editing options for this component.

1. How to retrieve values read from dialog (widget) to jsp?
Sol: String var= properties.get("<name of widget>","");

2. How to retrieve values from design_dialog to jsp?
Sol: String var= currentStyle.get("<name of widget>","");