Manager Screen - courtesy of Taifun Baer

[Scott Ferguson]

From puravidaapps.com:

'You can have many screens in an App Inventor app, but a screen always returns to the screen that opened it.

On the other hand, you can get the effect of screens switching to arbitrary other screen by setting up a "manager screen" that is used for opening all the other screens.

When a screen wants to switch, it returns to the manager with a value saying which screen to open next.'

See: http://puravidaapps.com/manager.php