Java interfaces derived from specifications of International Organization for Standardization (ISO) and Open Geospatial Consortium (OGC). Interfaces in the
org.opengis.geoapimodules were created from UML diagrams found in the ISO and OGC specifications and are part of the GeoAPI standard. The
org.opengis.geoapi.pendingmodule contains work in progress, not yet scheduled for standardization. The
org.opengis.conformancemodule allow implementors to test their product. Other modules are examples in public domain.