...
When using BrightAuthor:connected, the Player App is known generically as an autorun and more specifically as an autorun.brs file (.brs denotes a BrightScript file). When a BrightAuthor:connected Setup is applied to a player, an autorun.brs and associated files will be are automatically created on the player.
...
Partners can write a custom Player App to connect players with their CMS. Many partners use our basic autorun.brs as a foundation when for writing their own Player App.
...