Change Log: 6/05/2007 (J. Pantella) -- Created pursuant to approved CR 2007-1. See also http://metadata.dod.mil/irs/DDMS/cm/CR/2007/DDMS-CR-2007-1. 1/3/2007 (J. Pantella) -- Modified version attribute to reflect that this is version 1.4.2. 6/30/2008 (D. Barclay) -- Made attribute osuffix optional (for CR 2008-5). 7/1/2008 (D. Barclay) -- Corrected "minVerticalExent" to "minVerticalExtent" 7/15/2008 (J. Pantella) -- Modified namespace to reflect DDMS 2.0. 1/4/2010 (P. Lunceford) -- Created DDMS 3.0. Implemented CR 2009-12 to add Security markings to GeospatialCoverageType and CR 2009-14 to make the value and qualifier of CompoundCountryCodeIdentifierType to be required.