5. From the Spotting Tools dialog, click Copy.
Copy selects and interactively overwrites pixels. The dark specks are small but very visible; a simple way to get rid of them is to copy good pixels over the undesirable pixels.
Notice also that you also can see a "How to..." and a pop up Help tip. If the "How to..." doesn't provide the right answer, select the blue (i) to launch the online Help Reference for this feature.