Examine source code of Location Bar Characters

{
  "manifest_version": 2,
  "name": "Location Bar Characters",
  "version": "1.0.1resigned1",
  "description": "Have trouble remembering the special characters that filter the location bar's results? When you want to search only in bookmarks, or history, or open tabs, etc.? With this add-on a reminder is only a click away.",
  "homepage_url": "https://addons.mozilla.org/en-US/firefox/addon/location-bar-characters/",
  "icons": {
    "48": "icons/location-bar-characters-icon.svg"
  },
  "browser_action": {
    "default_icon": "icons/button-icon.svg",
    "default_title": "Location Bar Characters",
    "default_popup": "popup.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "locationbarcharacters@paulmorris.addons.mozilla.org"
    }
  }
}