anchor: Text:add
  Adds additional colored text to the Text object at the specified position.
  index = Text:add( textstring, x, y, angle, sx, sy, ox, oy, kx, ky )
  textstring string The text to add to the object.
  x (0) number The position of the new text on the x-axis.
  y (0) number The position of the new text on the y-axis.
  angle (0) number The orientation of the new text in radians.
  sx (1) number Scale factor on the x-axis.
  sy (sx) number Scale factor on the y-axis.
  ox (0) number Origin offset on the x-axis.
  oy (0) number Origin offset on the y-axis.
  kx (0) number Shearing / skew factor on the x-axis.
  ky (0) number Shearing / skew factor on the y-axis.
  index number An index number that can be used with Text:getWidth or Text:getHeight.
  index = Text:add( coloredtext, 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.
  x (0) number The position of the new text on the x-axis.
  y (0) number The position of the new text on the y-axis.
  angle (0) number The orientation of the new text in radians.
  sx (1) number Scale factor on the x-axis.
  sy (sx) number Scale factor on the y-axis.
  ox (0) number Origin offset on the x-axis.
  oy (0) number Origin offset on the y-axis.
  kx (0) number Shearing / skew factor on the x-axis.
  ky (0) number Shearing / skew factor on the y-axis.
  index number An index number that can be used with Text:getWidth or Text:getHeight.