header file equivalent?

In eSeries ColdFusion there was a Header file that we used to look at a variety of variables and then redirect the user to an appropriate web page.  If the membership was expired, redirect to a custom Membership Expired page with a link to the Bill Dues page.  If heading for Events registration and a non-member, redirect to a custom Select Non-member Type page to select and set a registration class.

Is there an analogous file in the iMIS Public View?

Paul