using nast structure in sap smart forms.
Whenever i display a form thru a related Transaction(e.g: Sales Order or Quotation) i get a window on which i have to press the 'Print Preview' button . On pressing that i get another window with print options(like 'Print Immediately' , 'Delete after Output') . I have to press the Print Preview button in this window(again) to view the smart form.
I was told that i can get rid of the extra window by using NAST structure, but dont know how to use it..