Examine source code of bexperi

{
  "background": {
    "scripts": [
      "background-scripts.js"
    ]
  },
  "description": "Toolbar button to help with work searches.  ALT+INSERT, TAB, TAB, enter Search Text",
  "manifest_version": 2,
  "name": "bexperi",
  "version": "2.81",
  "icons": {
    "48": "icons/rcify-48b.png"
  },
  "browser_action": {
    "browser_style": true,
    "default_popup": "popup/mod_choose_page.html",
    "default_icon": {
      "48": "icons/rcify-48.png",
      "96": "icons/rcify-96b.png"
    }
  },
  "permissions": [
    "<all_urls>",
    "activeTab",
    "tabs",
    "clipboardWrite",
    "clipboardRead",
    "storage",
    "contextMenus"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "/../content_scripts/mod_choose_content.js"
      ]
    }
  ],
  "options_ui": {
    "page": "/../settings/mod_choose_options.html",
    "browser_style": true
  },
  "commands": {
    "_execute_browser_action": {
      "suggested_key": {
        "default": "Ctrl+F12",
        "windows": "Alt+Insert"
      },
      "description": "Open /mod_choose_page.html popup; https://developer.mozilla.org/en-US/Add-ons/WebExtensions/manifest.json/commands; https://developer.mozilla.org/en-US/Add-ons/WebExtensions/API/browserAction/openPopup"
    },
    "toggle-feature": {
      "suggested_key": {
        "default": "Ctrl+F11"
      },
      "description": "Send a 'toggle-feature' event"
    }
  }
}