interface_build {
    {shade.rel.sh} 0
    {Creates a shaded topography map from a raster map.}
    {entry elevation {Raster map to use for shading:} 0 raster}
    {entry altitude {Altitude of sun/light (in degrees above horizon):} 0 ""}
    {entry azimuth {Azmuth of sun/light (in degrees east of north):} 0 ""}
}