About Frackle:

  Frackle is a very basic fractal renderer that can generate fractal images of
  the Mandelbrot set, Burning ship, and Julia sets. It allows some basic color
  generation schemes, supports supersampling and panning/zooming/dragging zoom
  regions. Other than that it's pretty basic and probably falls short of many
  other fractal image generators


Usage:

  To Zoom and center on a point, click with mouse button 1 in the fractal image.

  To zoom on a specific region, hold CTRL and mouse button 1 and drag a
  rectangle in the fractal image.

  (Note: Mouse button 1 is usually the left mouse button)

  Key shortcuts:

  Keypad minus Zoom out
  Keypad plus  Zoom in
  CTRL+Left    Pan left
  CTRL+Right   Pan right
  CTRL+Up      Pan up
  CTRL+Down    Pan down
