[state:default:NAME]for the page that is loaded and
[state:loading:NAME]for the skeleton one. Whenever the first one triggers an API request to load external data, the loading page will be shown immediately. Some points we need to keep in mind:
[state:default:NAME]to the main page and
[state:loading:NAME]to the skeleton screen. Note that you need to replace NAME with a unique identifier of your choice. It is not required to be uppercase but it helps us to keep things organised.