In this tutorial the author shows how to work with dimensions in the Xara Xtreme tool. This is basically a complex concept. Now open the tool, go to window and open dimensions. Make a square. You can see the details of the square on the tool bar which shows the width height and X,Y dimensions of the image. Here the image is straight forward. Now you can add the borders to the square and see the changes in the dimensions of it. This video shows the different changes that are taken place and also explains the concept about it. This video discusses in detail about the dimensions tool of Xara Xtreme software.