The default trace state is OFF. Note that if Trace(Start) is specified, trace accumulation begins/continues but trace information is not output until one or more output destinations
(that is, PAGE, FILE, TAG, EXCHFILES) are specified.
The trace mode is part of the session and is sticky. This means that the trace setting persists in the session until it is changed by either another trace tag or a query parameter (if enabled). So if you have more than one page in your application, the trace tag is required only on your initial page.
Only .srf files may be traced. If you follow a link to an .htm or .asp page, those pages will not be traced. If those pages link back to a .srf file in this application's virtual directory, then tracing will once again resume as long as the session is still active.
Be cautious when enabling tracing in a way that exposes the trace information to site visitors. Trace information will reveal
some information about your system that may be useful to intruders. The QUERYPARAM is configurable to help secure your web by allowing tracing to be turned on and off using a keyword that is not easily guessed