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          legend( (line1, line2, line3),
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          'best' : 0,          (currently not supported for figure legends)
          'upper right'  : 1,
          'upper left'   : 2,
          'lower left'   : 3,
          'lower right'  : 4,
          'right'        : 5,
          'center left'  : 6,
          'center right' : 7,
          'lower center' : 8,
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          'center'       : 10,

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            A :class:`matplotlib.font_manager.FontProperties`
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          *numpoints*: integer
            The number of points in the legend line, default is 4

          *scatterpoints*: integer
            The number of points in the legend line, default is 4

          *scatteroffsets*: list of floats
            a list of yoffsets for scatter symbols in legend

          *markerscale*: [ None | scalar ]
            The relative size of legend markers vs. original. If *None*, use rc
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          *fancybox*: [ None | False | True ]
            if True, draw a frame with a round fancybox.  If None, use rc

          *shadow*: [ None | False | True ]
            If *True*, draw a shadow behind legend. If *None*, use rc settings.

          *ncol* : integer
            number of columns. default is 1

          *mode* : [ "expand" | None ]
            if mode is "expand", the legend will be horizontally expanded
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          *title* : string
            the legend title

        Padding and spacing between various elements use following keywords
        parameters. The dimensions of these values are given as a fraction
        of the fontsize. Values from rcParams will be used if None.

        ================   ==================================================================
        Keyword            Description
        ================   ==================================================================
        borderpad          the fractional whitespace inside the legend border
        labelspacing       the vertical space between the legend entries
        handlelength       the length of the legend handles
        handletextpad      the pad between the legend handle and text
        borderaxespad      the pad between the axes and legend border
        columnspacing      the spacing between columns
        ================   ==================================================================


        **Example:**

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        Save the current figure.

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            If *fname* is not a string, remember to specify *format* to
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          *dpi*: [ None | scalar > 0 ]
            The resolution in dots per inch.  If *None* it will default to
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          *facecolor*, *edgecolor*:
            the colors of the figure rectangle

          *orientation*: [ 'landscape' | 'portrait' ]
            not supported on all backends; currently only on postscript output

          *papertype*:
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          *format*:
            One of the file extensions supported by the active
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          *bbox_inches*:
            Bbox in inches. Only the given portion of the figure is
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          *pad_inches*:
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          *bbox_extra_artists*:
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        Blocking call to interact with the figure.

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        The keyboard can also be used to select points in case your mouse
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    returned.  Be sure to create an axes with equal with and height,
    eg

    Example usage::

      # make a figure twice as tall as it is wide
      w, h = figaspect(2.)
      fig = Figure(figsize=(w,h))
      ax = fig.add_axes([0.1, 0.1, 0.8, 0.8])
      ax.imshow(A, **kwargs)


      # make a figure with the proper aspect for an array
      A = rand(5,3)
      w, h = figaspect(A)
      fig = Figure(figsize=(w,h))
      ax = fig.add_axes([0.1, 0.1, 0.8, 0.8])
      ax.imshow(A, **kwargs)

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