[Zope] Python, Pre-Fill Form Fields

thanks Paul, but... How does my browser's back button fill in the form values? Is there really no way to set a value into the FORM section of the REQUEST? For each input tag, setting up a tal lookup and fill-in, A. seems like a lot of work B. violates the ZPT concept of separating logic from layout. I would prefer keep all the logic in the python script.