Digital camera manufacturers more and more are offering RAW support for their cameras. As the availability of RAW format increases photographers are turning off JPEG and turning on RAW. Why? Because of the more comprehensive data structure of the RAW format you can perform edits on Raw files that are difficult or even impossible to achieve using other formats. To photographers this gives more creative latitude and inherently more control.
Creative Pro has produced an excerpt from the book Getting Started with Camera Raw in the form of a PDF file.
[Digital Camera RAW - Advanced Editing]