proj4.defs("EPSG:29700","+proj=omerc +lat_0=-18.9 +lonc=44.1 +alpha=18.9 +gamma=18.9 +k=0.9995 +x_0=400000 +y_0=800000 +ellps=intl +pm=paris +towgs84=-189,-242,-91,0,0,0,0 +units=m +no_defs +type=crs");