BC MOF Base GML Types schema. Copyright (c) 2002 BC Ministry of Forests, All Rights Reserved. Base type for MOF Features that provides any common MOF feature properties. Spatial Metadata is the primary example of a common property. Encloses a choice of either a Polygon or MultiPolygon geometry. Encloses a choice of either a LineString or MultiLineString geometry. Type for spatial metadata properties. Metadata fields are optional, since they are often unknown or not present