This fractal's applet is just an extension of gingerbread's applet. It basically just replaces the formulas with these:

x_{n + 1} = y_{n} -
sgn(x_{n})|sin(x_{n})cos(b) + c -
x_{n}sin(a + b + c)|

y_{n + 1} = a -
x_{n}

y

In this fractal, a, b and c are constants which, by default are
initialised to -55, -1 and -42 respectively, although these can be
changed with `<param>` tags.