class Magick::RVG::Tspan

def initialize(text = nil, x = nil, y = nil, &block)

Tspan objects can contain Tspan objects.

at the current text position.
If x and y are omitted the segment starts
Define a text segment starting at (x, y). 
def initialize(text = nil, x = nil, y = nil, &block)
  @x, @y = Magick::RVG.convert_to_float(x, y, :allow_nil)
  super(text, &block)
end