json_schema: {
      "$schema": "http://json-schema.org/draft-04/schema#",
      "type": "array",
      "title": "Wangscape tiles schema",
      "description": "Lists the contents and location of every tile output by a Wangscape project.",
      "items": {
          "type": "object",
          "title": "Tile schema",
          "description": "Specifies the contents and location of a tile output by Wangscape.",
          "properties": {
              "corners": {
                  "title": "Tile corners schema",
                  "description": "Specifies the IDs of the terrain types at the corners of the tile.",
                  "type": "array",
                  "items": {
                      "title": "Terrain ID schema",
                      "description": "Specifies a terrain type.",
                      "type": "string",
                      "pattern": "^[0-9a-zA-Z_-]+$"
                  }
              },
              "filename": {
                  "title": "Tile filename schema",
                  "description": "Specifies the filename of the tileset containing the tile.",
                  "type": "string"
              },
              "x": {
                  "title": "Tile x offset schema",
                  "description": "Specifies the horizontal offset, in pixels, of the tile within the tileset.",
                  "type": "integer",
                  "minimum": 0
              },
              "y": {
                  "title": "Tile y offset schema",
                  "description": "Specifies the vertical offset, in pixels, of the tile within the tileset",
                  "type": "integer",
                  "minimum": 0
              }
          },
          "required": [
              "corners",
              "filename",
              "x",
              "y"
          ]
      }
  }