This would be the default page that the users will come to if no program or panel is specified.
It can be replaced by having a page called _default.html in your site search rules (docroot or prefix).
This page would typically show something like:
You could also add things such as the weather:
[div size=750px/][html]<a class="weatherwidget-io" href="https://forecast7.com/en/43d65n79d38/toronto/" data-label_1="TORONTO" data-label_2="WEATHER" data-theme="original" >TORONTO WEATHER</a>
<script>
!function(d,s,id){var js,fjs=d.getElementsByTagName(s)[0];if(!d.getElementById(id)){js=d.createElement(s);js.id=id;js.src='https://weatherwidget.io/js/widget.min.js';fjs.parentNode.insertBefore(js,fjs);}}(document,'script','weatherwidget-io-js');
</script>[/html][/div]
Or maybe a stock market report
[html]<iframe width="320" noresize="noresize" scrolling="no" height="300" frameborder="0" src="https://widgets.tc2000.com/WidgetServer.ashx?id=203477"></iframe>[/html]