Some retouching features in the Develop module, such as the Remove Spots tool and Remove Red Eye tool, may not be available in Adobe Camera Raw 4. The really unique thing about these tools is that you can apply them nondestructively to any image. For instance, you can carry out basic spotting work on an image in Lightroom by using the Remove Spots tool in Clone mode or Healing mode, and the retouching work will be saved and stored as editing instructions. This principle also applies to using the Remove Red Eye tool. Apart from the fact that all retouching work can be undone easily, you have complete freedom to make Develop module adjustments in any order you like. It doesn’t matter whether you perform the spotting before you adjust the colors and tones, because Lightroom records these actions as editing instructions rather than editing the original pixels.