Examine source code of Flink

{
  "manifest_version": 2,
  "name": "Flink",
  "version": "1.4resigned1",
  "description": "Share direct links to parts of a web page. Flink is a browser extension that adds unobtrusive direct (fragment) links to and for elements on a web page. This enables you to create a link directly to a specific part of a web page.",
  "icons": {
    "48": "icons/link-6x.png"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "flink.user.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{fe04bd0e-de4b-4760-83a2-acf9b3b989b9}"
    }
  }
}