We have already showed you how to use fills for shapes in PowerPoint 2016. A fill is something that is contained within the confines of the shape. Similarly, shapes have another attribute known as the “line” or the “outline”. A line is the perimeter surrounding a closed shape or the line itself within an open shape — we will explore more about lines later in this tutorial. In subsequent tutorials, we will show how you can work with shape outlines in PowerPoint 2016.