Preview a layout
Preview mode
Preview mode in Rails Builder enables you to visualize how a layout will look in the TV app. This is particularly useful when you’ve created a new layout or made changes to an existing one.
To preview a layout:
Click the Preview button at the top right of the layout screen.
Select a device format using the tabs at the top of the screen:
Monitor
Tablet
Phone Landscape
Phone Portrait
To close the preview and return to the Rails Builder layout screen, click the blue Layout button at the top right of the screen.