IGNFHeightASCIIGrid -- IGN-France height correction ASCII grids .. shortname:: IGNFHeightASCIIGrid .. versionadded:: 2.4 .. built_in_by_default:: Supports reading IGN-France height correction ASCII grids (.txt, .mnt, .gra). See also: Format description (in French) Height correction grids Driver capabilities .. supports_georeferencing:: .. supports_virtualio::