>I want to close down a form after it has been inactive for a certain period of time. I'm assuming I should use a timer but I'm not sure how to use it properly to capture this situation. Any ideas?

*** Timer.Timer event
IF ABS(seconds()-thisform.seconds)>1200 && check every 20 min.
Release Thisform
ENDIF
*** ControlX.InteractiveChange event (or something else)
Thisform.seconds=seconds()