Geographic Markup Language (GML) is an XML-based language designed to represent geographic features and their attributes. It allows for the encoding of spatial information, making it easier to share and manipulate geographic data across different systems and applications. GML is widely used in geographic information systems (GIS) and supports various types of geographic data, including points, lines, and polygons. GML is part of the Open Geospatial Consortium (OGC) standards, promoting interoperability among different geographic data formats. By using GML, organizations can ensure that their geographic data is accessible and usable by various software tools, enhancing collaboration and data sharing in fields like urban planning, environmental monitoring, and transportation.