anchor.diff:                  "id:right" : "Integer. For the relation on the right side of the boundary line. Common optional value.",
                   "name:left" : "See name section above, other variants like `old_name` also supported. Common optional value.",
                   "name:right" : "See name section above, other variants like `old_name` also supported. Common optional value.",
  -                "maritime_boundary" : "Boolean. A special Mapzen calculated value loosely coupled with OpenStreetMap's maritime tag, but with spatial buffer processing for lines falling in the ocean. Common optional value.",
  +                "maritime_boundary" : "Boolean. A special Tilezen calculated value loosely coupled with OpenStreetMap's maritime tag, but with spatial buffer processing for lines falling in the ocean. Common optional value.",
                   "labelrank" : "from Natural Earth. Optional value.",
                   "scalerank" : "from Natural Earth. Optional value.",
                   "osm_relation" : "`true`, which can also be deduced from negative `id` values. Optional value."
  
positive.code:             },
              "maxzoom" : 16.000000,
              "minzoom" : 0.000000,
              "description" : "Earth polygons and natural feature lines. Geometry types: polygon, line, label_placement."
          },
          {
              "id" : "landuse",
  
negative.code:                 "layer" : "Integer. Relative stacking order of feature with respect to other map features. Common optional value, one of: -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5.",
                  "location" : "String. From OpenStreetMap to indicate if building is underground, similar to `layer`. Common optional value.",
                  "min_height" : "Number. In meters, where available, otherwise estimated from `building:min_levels` if present. Common optional value.",
                  "building_material" : "String. Common optional value.", 
                  "roof_color" : "String. Common optional value.",
                  "roof_height" : "Number. In meters, where available. Common optional value.",
                  "roof_material" : "String. Common optional value.",
  