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To allow viewing a colored output surface in one graph, the x or y input is fixed to one value:

• Real x input fixed:
  z used for the IMAGINARY OPTPUT
  ^
  | / y is the changing imaginary input
  |/
  0-----> x fixed => reused for REAL OUTPUT
  
• Imaginary y input fixed:
  z used for the REAL OPTPUT
  ^
  | / y fixed => used for IMAGINARY OUTPUT
  |/
  0-----> x is the changing real input
  
  

By displaying also values above and below the fixed input value a 3d band will give an idea of the colored complex output surface.
Additionally values setup in L1, L2, L3 for x, y, z can be displayed with a numbered cross in the 3d space.

• Input dialogs used for configuration.
• Touch gestures and keys to rotate, move and zoom.
• Useable gestures / keys displayed in lower part of graph.
  

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