name: 'Terrain Classic' description: '' attribution: 'Map Data © OpenStreetMap' center: [-122.3782, 37.7706, 11] format: png interactivity: false minzoom: 0 maxzoom: 18 srs: '+proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0.0 +k=1.0 +units=m +na...