Adding charts and editing them is a much more intuitive and easy task in PowerPoint 2011 than it used to be using older versions of PowerPoint. PowerPoint now makes repetitive formatting easy and consistent with the Chart Styles option. There are some pre-defined styles that contain combinations of formatting elements such as fills, outlines, and effects. PowerPoint provides various such styles to choose from — and all these styles are based on Office Themes. Just a couple of clicks can make your chart look great.