OSDNFFeatures.xsd v2.6 2003/01 Ordnance Survey, (c) Crown Copyright. All Rights Reserved January 2003. See http://www.ordnancesurvey.co.uk for guidelines and related information This schema defines the topographic, Address and ITN features. This defines the properties common to all Ordnance Survey features. Abstract base type for all ordnance survey features. Extends the gml abstract feature in order to ensure compliance with GML. This defines the properties common to most road information features (excluding InformationPoint features).