pointDistance
True if the event is within the given distance range of the given lat and lon. This allows for the definition of donuts and circles of accepted events.
Example
<pointDistance> <latitude>35</latitude> <longitude>-85</longitude> <unit>DEGREE</unit> <min>30</min> <max>90</max> </pointDistance>
Places this can be found
backwardsEventFinder contains this directly
eventFinder contains this directly
fdsnEvent contains this directly