Automatic Content Behavior
Automatic Zoom uses detected content and the configured screen ratio to calculate zoom. NLS provides horizontal nonlinear stretch. Each has its own Enabled switch under Screen Configuration.
Automatic Zoom offers Small Bars and Fill Screen. Small Bars leaves larger aspect-ratio differences fitted; Fill Screen zooms enough to cover the screen and can crop the picture.
Manual Zoom / Position works independently of content detection. Opening any settings page does not enable its correction.