Annotation Mode in Workbook / AlphaTeach is also known as “Glass Mode”. Here’s where you can use your favourite Workbook pens or other tools right over any software or document in your computer. This is a great way to extend the power of Workbook to any other tools on your computer. Mark up documents; draw on images, maps and charts; use the magnifier or the spotlight to focus viewer attention on part of your screen…. It can all be done using Annotation Mode.