: ComplexSymbolExtensionhttp://def.isotc211.org/iso19117/2012/ Create a prefix for http://def.isotc211.org/iso19117/2012/ Hit Enter to save Double click to create a prefix | : CompoundSymbolExtensionhttp://def.isotc211.org/iso19117/2012/ Create a prefix for http://def.isotc211.org/iso19117/2012/ Hit Enter to save Double click to create a prefix |