Question: I'm making my first step in to creating Universal applications - does anyone know what the top bar control is in the Alarms and Clock app?

I noted that the middle section is a Pivot and it's switching between PivotItems - but when you change the top icons are highlighted based on the PivotItem

![Alarms and Clock](https://i.stack.imgur.com/h6s8e.png)

Is it just a Grid with different buttons that are highlighted depending on the SelectedIndex of the Pivot control? Or is it a specific control that hasn't been documented yet?

Answer: 
They're just using a pivot with a custom header template.

This should provide some insight:
<https://msdn.microsoft.com/en-us/library/windows/apps/dn997788.aspx>
Have a look at the Pivot sample in the [Windows Universal Sample](https://github.com/Microsoft/Windows-universal-samples/tree/master/Samples/XamlPivot) repository on Github. Scenario 3 contains the customized pivot control with the style template.

[![enter image description here](https://i.stack.imgur.com/YVS0t.png)](https://i.stack.imgur.com/YVS0t.png)