Topology & flows definitions (relational & intentional)
 

• Location
  How to define current location?
  How to give it a name?
  How to display it?
  How to manage zoom level on that location?
  Should Portrait or Landscape orientation be chosen?
   
• Ubiquity
  How many concurrent location can be looked at?
  How to display them?
  How to show which one as the focus?
   
• Memory
  How to centralize memory interfaces?
  How to distinguish between long and short term?
  How to separate data and action memory?
  How to create a memory wizard?
   
• Actions
  How to display a common action interface?
  How to ask for action parameters?
  Where to display action results?
  How to manage action context?
  How to manage inline actions (edition)?
   
• Navigation
  What type of spatial metaphor to use?
  How to represent time or workflow?
  How to remove topological problems?
   
• Synchronization and groups
  How should data be synchronized on screen?
  How should interface elements be synchronized?
   

Interface Language definition
 

• Data Definitions to Interface generation
• Imagine data properties so that interface can display them