Move the RED and BLUE points to change the position and size of the fractal.
Z and X to increments the number of iterations.
J and K for rough angle increments. N and M for finer angle increments. Scroll wheel can also be used for incrementing the angle.
Y and U changes the number of drawn iterations (starting from the smallest).
B toggles the bases of the triangles.
C toggles between "normal" and anti-aliased lines. Q and W changes the width of normal lines.