This expression enforces a space delimited list
of latitude longitude pairs. The latitude and
longitude values are delimited by a comma
(i.e. 38.00,-100.00 40.00,-78.00)
This expression enforces a coma delimited list city names.
The city names are ordered to match the cities latitude
and longitude value in the accompanying latLonListType element
(i.e. Dallas,Los Angeles,Salt Lake City)