User program interactive communication

• 3D graphics window interactions
  • Mouse
    • Mouse trouble shooting
  • Keyboard shortcuts: magic of a keyboard touch
    • Arrow keys
  • Dials
• "Depp pages" window
• Dials label window
• User menu block communication
  • Using menu items
  • Menu arguments: History list
  • Menu arguments: Selection keys
  • Menu arguments: inquired variables
  • Menu arguments: predefined variables