Sharpen
The Sharpen Tool can be used to increase the sharpness or focus of a specific area of your picture. Use the Sharpen Tool by clicking once in a particular area of your picture, or by dragging the mouse while holding down the left mouse button. To increase the sharpening effect, drag the mouse across the same area multiple times, releasing and re-pressing the mouse button between each pass.
The size, shape, edge (softness) and power (amount) of the Sharpen Tool can be adjusted using the controls on PixelNEO's Option Panel.