@crutledge - it can only run at a point in time - just like validating with FlightCrew for instance. It is the same sort of feature. Otherwise you wouldn't be able to declare a new style and then switch to an html file to use it, it would be gone already
. The only way at which you would know it was "safe" to be run is when the user says so - which is exactly what you have now by triggering it from the tools menu.