Page Rank ↔ to add weight to specific pages for search

{
  "start_urls": [
    {
      "url": "http://www.example.com/docs/concepts/",
      "page_rank": 5
    },
    {
      "url": "http://www.example.com/docs/contributors/",
      "page_rank": 1
    }
  ]
}

References