Any removed energy, is collected per pixel and re-distributed across the image in a second pass, giving the user intuitive control, via the 'Grain Dispersion' parameter, over a hard upper size limit beyond which grain is no longer smoothed out.
I'm relatively new to image processing and just wanted to say how straight forward and powerful StarTools is.
To apply the new colour balance to the whole image, launch the Mask editor once more and click Clear, then click Invert to select the whole image.
StarTools keeps a detailed log of what modules and parameters you used.
The Heal module was created to provide a means of substituting unwanted pixels in an neutral way.
You can convert everything you see to a format you find convenient. Give it a try!