Here we click the Draw guide icon and hover around the 5D elbow radius where the percentage around the radius is graphically displayed. Since the model direction for this example starts with the shorter end of the pipeline down to the longer end, that percentage is from the elbow start point. While the percentage is displayed, type the percentage around the elbow radius where you want to place the guide, which will cause a % box to appear with the numbers that you typed. Then press enter to draw the guide as shown below right. In this example, you can see that we entered 27%.