The document discusses various techniques for using images to document procedures and concepts in a user manual, including capturing an entire dialog box or task flow in a single image, using arrows and text boxes to annotate images, showing progressive steps in a task through multiple images, and illustrating concepts, system architectures, wizards and more through customized images. It notes that while visual documentation takes more time, it can convey information more quickly and clearly to users. However, excessive images can also make documents longer, heavier and age more quickly.