As much for my own benefit as anyone else’s here are the icons that all exist within the “Segio UI Symbol” Font referenced in the Standard Styles XAML fragment of every new project. (They should form the basis for any icon appearing in the Application Bar)
NB Click on the images to enlarge.
NB Al the available font symbols can be viewed in the Character Map under Control Panel->Fonts (Above shows a small selection of those available)
With thanks to Long Zheng for providing source code for easily rendering the icons: https://github.com/metrotwit/MetroAppBarSample