Back in October 2006, Visio Guy posted the Circular Multi-arrow Shapes that offer superior capabilities to the popular in-the-Visio-box version.
Well, David Van Hemel had already created a similar, flexible solution for PowerPoint users. Although he was happy to find our Visio-based offering, he thought that his PowerPoint tool would be useful to others, and he generously offered his solution for consumption by the smart-graphics-loving community.