If the client window browser name is not defined, set the name of this variable called 'nsdwin' to 'MAIN'. The 'MAIN' browser processes are going through every audit trails. Sometimes it's usefull that a subwindow browser of an application doesn't go through audit trail, particulary when this subwindow has for goal to check indefinitely if something has changed at the back-end side (like a big loop waiting the end of another process). E.g. btach job process are most of time requiring that kind of behaviour. To avoid having a trace of the subwindow hits every x seconds in your trail database, call the 'FLY' script with nsdwin as get or post variable, with a value not equal to 'MAIN'.