Organization
Multi-Display (MD) content is organized as follows:
| Topic Area | Article | 
|---|---|
| Developing and testing | 
  Recommended practices Testing and development environment Frequently asked questions  | 
| Collections of related articles | 
  Displays System decorations support Input method editor support  | 
| Individual articles | 
  Multi-resume Activity launch policy Lock screen Input routing Multi-zone audio  | 
Terminology
Throughout these articles, primary and secondary displays are defined as follows:
- Primary (default) display has the display ID of
  
DEFAULT_DISPLAY - Secondary display has a display ID not
  
DEFAULT_DISPLAY