Andrew, I'm guessing: exit.
Tillman, I think my example solves the 'what' in a very general way. Each procedure which could be called by an application needs to make sure the variables have been initialized, which happens once per request. At the end, the callback 'reset' does more than just unset some variables. It handles all cleanup for the namespace. The namespace allows you to easily manage this process. Some namespace variables you might actually like to hang around across requests, so there is no 'blind' solution to this issue, you may not want defaults restored in every case.
