Thank you - my further question,s what is recommended in terms of
clearing any session variables in the context of:
1. on error, I want any session variables cleared and the user
redirected to a logon page
( I wish to prevent a user from reentering the error page and
recreating the original error)
3. I wish to prevent others from "backing" into web pages if a user
does not log out and session timeout has not yet occurred.

I have the web pages set so that the browser will not cache them

It kind of sounds like I just need Session.clear, but I have been using
Session.Abandon.

MY thanks!