Geospatial PDF is a set of geospatial extensions to the Portable Document Format (PDF) that relate a region in the document page to a region in physical space. The establishment of this relationship is a process of georeferencing. The georeferencing metadata for geospatial PDF is most commonly encoded in one of two ways: the OGC best practice; and as Adobe's proposed geospatial extensions to ISO 32000. Features commonly associated with geospatial PDF are simply features of PDF: ISO 32000-2 (PDF 2.0), currently under development, will incorporate geospatial PDF features.