HTML5 Custom Page Controls
The HTML5 Custom Page Control lets you design custom UI elements beyond the functionality of loose XAML. Similar to the Custom Content Loader, which allows page designers to select loose XAML as the content of a custom page control, the HTML5 Custom Page Control lets you select HTML (previously added as Extension Application Content) to add a custom control to a page.
The HTML5 Custom Page Control is supported on Windows, Linux, and Android clients. It is only available for use with POS Operations (not with kiosks or Simphony Transaction Services).