I'm using Drupal 6 with the WebForms module, and my entire site uses https.
I need to insert some cache-control statements in the page headers of only certain pages (ones with forms on them). Is this something I can do by modifying my theme? Any clues about how to do it?
If you're curious, the problem I want to solve occurs when an anonymous user A fills out a form on the site and submits it and gets to the confirmation page and then walks away without closing the browser. User B then walks up to the computer, hits the "back" command on the browser, and sees everything User A filled out on the form. This user-typed data is not being re-sent by the server, it is just remembered by the local web browser app. I believe if I send some cache-control statements in the header I can prevent that behavior.