new_contents: ############################################################
  #
  #  LAYOUTS:
  #
  #  window.get_layout() and window.set_layout()
  #  aren't really documented in the API so I am
  #  making some notes here about how they work.
  #
  #    * rows are the positions (from 0.0 to 1.0) that make
  #      up the horizontal lines around (sides of) views.
  #
  #    * columns are the positions (from 0.0 to 1.0) that make
  #      up the vertical lines around (top/bottom of) views
  #
  #    * cells are the 4 positions (left,top,right,bottom)
  #      that define the positions of each view
  #
  #  ROWS:
  #
  #  0.0        -----------------
  #             |    |          |
  #             |    |          |
  #  0.66       -----------------
  #             |    |          |
  #  1.0        -----------------
  #
  #  COLUMNS:  0.0  0.3        1.0
  #
  #  CELLS:
  #
  #    ---------
  #    | 0 | 0 |
  #    |0 1|1 2|
  #    | 1 | 1 |
  #    ---------
  #    | 1 | 1 |
  #    |0 1|1 2|
  #    | 2 | 2 |
  #    ---------
  #
  ###########################################################
  
subject: Create layouts_doc.py