def write_tx_pr(horiz, font) # :nodoc:
      rotation = nil
      if font && font[:_rotation]
        rotation = font[:_rotation]
      end
      @writer.tag_elements('c:txPr') do
        # Write the a:bodyPr element.
        write_a_body_pr(rotation, horiz)
        # Write the a:lstStyle element.
        write_a_lst_style
        # Write the a:p element.
        write_a_p_formula(font)
      end
    end
def write_tx_pr(horiz, font) # :nodoc:
      rotation = nil
      if font && font[:_rotation]
        rotation = font[:_rotation]
      end
      @writer.tag_elements('c:txPr') do
        # Write the a:bodyPr element.
        write_a_body_pr(rotation, horiz)
        # Write the a:lstStyle element.
        write_a_lst_style
        # Write the a:p element.
        write_a_p_formula(font)
      end
    end
Write the <c:txPr> element.