anchor: Text:addf
  Adds additional formatted / colored text to the Text object at the specified position.
  
  The word wrap limit is applied before any scaling, rotation, and other coordinate transformations. Therefore the amount of text per line stays constant given the same wrap limit, even if the scale arguments change.
  index = Text:addf( textstring, wraplimit, align, x, y, angle, sx, sy, ox, oy, kx, ky )
  textstring string The text to add to the object.
  wraplimit number The maximum width in pixels of the text before it gets automatically wrapped to a new line.
  align AlignMode The alignment of the text.
  x number The position of the new text (x-axis).
  y number The position of the new text (y-axis).
  angle (0) number Orientation (radians).
  sx (1) number Scale factor (x-axis).
  sy (sx) number Scale factor (y-axis).
  ox (0) number Origin offset (x-axis).
  oy (0) number Origin offset (y-axis).
  kx (0) number Shearing / skew factor (x-axis).
  ky (0) number Shearing / skew factor (y-axis).
  index number An index number that can be used with Text:getWidth or Text:getHeight.
  index = Text:addf( coloredtext, wraplimit, align, x, y, angle, sx, sy, ox, oy, kx, ky )
  coloredtext table A table containing colors and strings to add to the object, in the form of {color1, string1, color2, string2, ...}.
  coloredtext.color1 table A table containing red, green, blue, and optional alpha components to use as a color for the next string in the table, in the form of {red, green, blue, alpha}.
  coloredtext.string1 string A string of text which has a color specified by the previous color.
  coloredtext.color2 table A table containing red, green, blue, and optional alpha components to use as a color for the next string in the table, in the form of {red, green, blue, alpha}.
  coloredtext.string2 string A string of text which has a color specified by the previous color.
  coloredtext.... tables and strings Additional colors and strings.
  wraplimit number The maximum width in pixels of the text before it gets automatically wrapped to a new line.
  align AlignMode The alignment of the text.
  x number The position of the new text (x-axis).
  y number The position of the new text (y-axis).
  angle (0) number Orientation (radians).
  sx (1) number Scale factor (x-axis).
  sy (sx) number Scale factor (y-axis).
  ox (0) number Origin offset (x-axis).
  oy (0) number Origin offset (y-axis).
  kx (0) number Shearing / skew factor (x-axis).
  ky (0) number Shearing / skew factor (y-axis).
  index number An index number that can be used with Text:getWidth or Text:getHeight.