Saving one construction
From the menu File->Save or File->Save
  As..., a file can be saved containing the figure under the active
  view. 
(!) Dr. Genius can work with several figures at the same
  time. The user can switch from one figure to another one by clicking on
  the corresponding tabs.
With the second menu, the user can change the name of the saved
  document.
(!) The default file name proposed to the user by Dr. Genius
  can be changed from the Edit->Preferences... menu.
For more information see
Section Defaut Behaviour.
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