These are the controls of the "Point Distortion"-tool:
The first three controls will modify the calculated matte.
Here you can feather the matte.
Check this checkbox to invert the matte.
Use a setting below 100 to make the matte transparent.
The next five controls with distort the content of the matte.
Use this slider to blur the image contained within the matte.
With this slider you can change the saturation of the image contained within the matte.
If you like you can distort the content of the matte.
"Distort Method": "Random" will distort the image with a scattered noise. "Static" will add a static noise, as if you look through a heavily rippled glass.
"Distort Amount" controls the amount of the distortion.
This slider controls the opacity of the areas outside the matte. A setting of 0 will make the area complete transparent.
Up to 10 point can be distorted simultaneously.
Define how many points you like to distort with the "Use Points 1-"-popup-menu. Please define how many points you like to use, before you tell the MotionTracker the initial positions of the points.