Examine source code of Display #Anchors

{
  "name": "Display #Anchors",
  "description": "Displays anchors for all content in the current web page without breaking the layout.",
  "version": "1.4resigned1",
  "manifest_version": 2,
  "background": {
    "scripts": [
      "storage-sync-polyfill.js",
      "background.js"
    ],
    "persistent": false
  },
  "browser_action": {
    "default_title": "Display #Anchors",
    "default_icon": {
      "19": "icon19.png",
      "38": "icon38.png"
    }
  },
  "icons": {
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "permissions": [
    "storage",
    "notifications",
    "contextMenus",
    "activeTab"
  ],
  "options_ui": {
    "page": "options.html",
    "chrome_style": true
  },
  "commands": {
    "_execute_browser_action": {
      "suggested_key": {
        "default": "Alt+Shift+A"
      }
    }
  },
  "applications": {
    "gecko": {
      "id": "display-anchors@robwu.nl"
    }
  }
}