Examine source code of Table2Clipboard2 Mod

{
  "manifest_version": 2,
  "name": "Table2Clipboard Mod",
  "version": "1.6.2.0",
  "description": "Allow to copy to clipboard an HTML table rows/columns selection correctly formatted.",
  "applications": {
    "gecko": {
      "id": "t2c_mod@shirosaki",
      "strict_min_version": "60.0"
    }
  },
  "icons": {
    "16": "icons/t2c-16x16.png",
    "32": "icons/t2c-32x32.png",
    "64": "icons/t2c-64x64.png",
    "128": "icons/t2c-128x128.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "commands": {
    "copy-selected-cells": {
      "suggested_key": {
        "default": "Alt+C"
      },
      "description": "Copy selected cells to clipboard"
    }
  },
  "options_ui": {
    "browser_style": true,
    "page": "src/main/content/t2c/settings/settings.html"
  },
  "permissions": [
    "<all_urls>",
    "activeTab",
    "menus",
    "storage",
    "clipboardWrite"
  ],
  "default_locale": "en"
}