'Built in .NET Core Icons?

I am using Avalonia with .NET Core on Linux. I created a label where the content is a character code like . When I display this it shows up as a little Bing icon. Here's my app with three of the labels.

<Label Content="&#xE700;" FontSize="18" Foreground="White"/>

My question is - where can I find a list of these icons to know which ones to use? What font is this? Is this specific to .NET Core, Avalonia, Linux..?

I am pretty sure in Windows if you attempt this it shows up as unsupported characters (like the blank squares □□□□).



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