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  • WindowMargins is an option for Notebook which specifies what margins to leave around the window that is used to display the notebook on the screen.
  • WindowMargins-> left , right , bottom , top specifies the distances from each edge of your screen to each edge of the window.
  • Typically only two distances are given explicitly; the others are Automatic, indicating that they should be determined from the size of the window.
  • Explicit distances are given in printer's points.
  • Negative values represent edges that are off the screen.
  • The settings for WindowMargins change whenever you move a window around interactively using the front end.
  • Window edges closer to the edges of the screen are typically assigned explicit margin distances; the others are set to Automatic. This allows the same setting for WindowMargins to work on screens of different sizes.
  • With WindowSize->{Automatic, Automatic} all four margin distances must be given explicitly.
  • With the default setting WindowMargins->Automatic, new windows are placed on your screen in such a way as to make as many window title bars as possible visible.
  • See the Mathematica book: Section 2.10.13.
  • See also: WindowSize, WindowMovable.