tiles and best practice

[Rolando Martinez]

Hi everyone,
 
I'm working in a Project  using Struts and tiles. Right now I have a
problem and I don't know what the best way to solve it is.
 
The problem is : there is only one layout and many JSP pages that can
build the page
 
The question is:
Where Can I define the form that encapsulates defined fields in forms?
 
Is it better to define it in a JSP page that contains the layout or to
define a form for each JSP page that instances the layout? 
 
 
Thanks.