Examine source code of TK Tree Style Tab Outliner

{
  "manifest_version": 3,
  "name": "__MSG_extName__",
  "description": "__MSG_extDescription__",
  "version": "0.1.181.0",
  "author": "ToyKeeper",
  "homepage_url": "https://toykeeper.net/tktsto",
  "default_locale": "en",
  "browser_specific_settings": {
    "gecko": {
      "id": "tktsto-firefox@toykeeper.net",
      "strict_min_version": "115.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": [
          "browsingActivity"
        ]
      }
    }
  },
  "icons": {
    "16": "img/icon-16.png",
    "32": "img/icon-32.png",
    "48": "img/icon-48.png",
    "64": "img/icon-64.png",
    "128": "img/icon-128.png"
  },
  "permissions": [
    "storage",
    "downloads",
    "tabs",
    "tabHide",
    "alarms"
  ],
  "optional_permissions": [],
  "optional_host_permissions": [
    "http://localhost/*",
    "<all_urls>"
  ],
  "options_page": "options/options.html",
  "background": {
    "scripts": [
      "bkgd/bkgd.js"
    ],
    "type": "module"
  },
  "sidebar_action": {
    "default_title": "TK Tree Style Tab Outliner",
    "default_panel": "view/sidepanel.html",
    "default_icon": {
      "16": "img/icon-16.png",
      "32": "img/icon-32.png",
      "48": "img/icon-48.png",
      "64": "img/icon-64.png",
      "128": "img/icon-128.png"
    }
  },
  "action": {
    "default_title": "TKTSTO Sidebar",
    "default_icon": {
      "16": "img/icon-16.png",
      "32": "img/icon-32.png",
      "48": "img/icon-48.png",
      "64": "img/icon-64.png",
      "128": "img/icon-128.png"
    }
  },
  "commands": {
    "_execute_sidebar_action": {
      "description": "Toggle Side Panel",
      "suggested_key": {
        "default": "F1"
      }
    },
    "backupSession": {
      "description": "Back up session now"
    },
    "unloadCurrentTab": {
      "description": "Unload current tab",
      "suggested_key": {
        "default": "Alt+U"
      }
    },
    "bookmarkCurrentTab": {
      "description": "Bookmark current tab",
      "suggested_key": {
        "default": "Alt+K"
      }
    },
    "addNoteToCurrentTab": {
      "description": "Add highlighted text to current tab's notes"
    },
    "cursorUp": {
      "description": "Move cursor up",
      "suggested_key": {
        "default": "Alt+Up"
      }
    },
    "cursorDown": {
      "description": "Move cursor down",
      "suggested_key": {
        "default": "Alt+Down"
      }
    },
    "cursorLeft": {
      "description": "Move cursor left (to parent)"
    },
    "cursorRight": {
      "description": "Move cursor right (to 1st child)"
    },
    "cursorPgUp": {
      "description": "Move cursor up 1 page",
      "suggested_key": {
        "default": "Alt+PageUp"
      }
    },
    "cursorPgDown": {
      "description": "Move cursor down 1 page",
      "suggested_key": {
        "default": "Alt+PageDown"
      }
    },
    "cursorHome": {
      "description": "Move cursor home (up to first sibling)"
    },
    "cursorEnd": {
      "description": "Move cursor end (down to last sibling)",
      "suggested_key": {
        "default": "Alt+End"
      }
    },
    "loadNode": {
      "description": "Load or switch to highlighted node",
      "suggested_key": {
        "default": "Alt+L"
      }
    },
    "unloadNode": {
      "description": "Unload highlighted node",
      "suggested_key": {
        "default": "Shift+Alt+U"
      }
    },
    "toggleExpanded": {
      "description": "Expand/Collapse highlighted node",
      "suggested_key": {
        "default": "Alt+Space"
      }
    },
    "toggleMarked": {
      "description": "Mark or unmark the current node",
      "suggested_key": {
        "default": "Alt+M"
      }
    },
    "unmarkAll": {
      "description": "Unmark all nodes",
      "suggested_key": {
        "default": "Shift+Alt+M"
      }
    },
    "pasteMarked": {
      "description": "Move marked nodes to after cursor",
      "suggested_key": {
        "default": "Alt+P"
      }
    },
    "pasteMarkedBefore": {
      "description": "Move marked nodes to before cursor",
      "suggested_key": {
        "default": "Shift+Alt+P"
      }
    },
    "moveNodeUp": {
      "description": "Move highlighted node up",
      "suggested_key": {
        "default": "Shift+Alt+Up"
      }
    },
    "moveNodeDown": {
      "description": "Move highlighted node down",
      "suggested_key": {
        "default": "Shift+Alt+Down"
      }
    },
    "moveNodeLeft": {
      "description": "Move highlighted node left (toward parent)",
      "suggested_key": {
        "default": "Shift+Alt+Left"
      }
    },
    "moveNodeRight": {
      "description": "Move highlighted node right (child of prev sibling)",
      "suggested_key": {
        "default": "Shift+Alt+Right"
      }
    },
    "moveNodeHome": {
      "description": "Move highlighted node home (up to first sibling)",
      "suggested_key": {
        "default": "Shift+Alt+Home"
      }
    },
    "moveNodeEnd": {
      "description": "Move highlighted node end (down to last sibling)",
      "suggested_key": {
        "default": "Shift+Alt+End"
      }
    },
    "prevTab": {
      "description": "Focus the previous tab"
    },
    "nextTab": {
      "description": "Focus the next tab"
    }
  }
}