t>FT_Matrix</tt></a> structure that describes a 2&times;2 affine
      matrix.  The third parameter is a pointer to a <a
      href="../reference/ft2-basic_types.html#FT_Vector">
      <tt>FT_Vector</tt></a> structure that describes a simple
      two-dimensional vector that is used to translate the glyph image
      <em>after</em> the 2&times;2 transformation.</p>

      <p>Note that the matrix pointer can be set to NULL, in which case the
      identity transform will be used.  Coefficients of the matrix 