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This module contains functions to handle markers.  Used by both the
marker functionality of `~matplotlib.axes.Axes.plot` and
`~matplotlib.axes.Axes.scatter`.
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============================== ===============================================
marker                         description
============================== ===============================================
%s
``'$...$'``                    render the string using mathtext.
*verts*                        a list of (x, y) pairs used for Path vertices.
path                           a :class:`~matplotlib.path.Path` instance.
(*numsides*, *style*, *angle*) see below
============================== ===============================================

The marker can also be a tuple (*numsides*, *style*, *angle*), which
will create a custom, regular symbol.

    *numsides*:
      the number of sides

    *style*:
      the style of the regular symbol:

      =====   =============================================
      Value   Description
      =====   =============================================
      0       a regular polygon
      1       a star-like symbol
      2       an asterisk
      3       a circle (*numsides* and *angle* is ignored)
      =====   =============================================

    *angle*:
      the angle of rotation of the symbol, in degrees

For backward compatibility, the form (*verts*, 0) is also accepted,
but it is equivalent to just *verts* for giving a raw set of vertices
that define the shape.
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        Draws mathtext markers '$...$' using TextPath object.

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