gmlsfLevels.xsd Compliance levels schema for Simple features GML 3.1.1 Profile Copyright (c) 2006 Open Geospatial Consortium, Inc. All Rights Reserved. Level 0 = no complex-valued properties and minOccurs,maxOccurs have a value domain of 0 or 1 Level 1 = complex-valued properties with no restriction on minOccurs and maxOccurs Level 2 = no restrictions on type of non-spatial scalar properties but must only support spatial properties declared in clause 8 This URI references the profile schema to which a GML application schema conforms.