The applet consists of a hexagonal mesh of springs that can be distorted by various tools. In the current version, there are five tools. You can add attractive and repulsive forces, and then delete them. You can cut springs and heal springs that have been cut. We may add additional tools in the future for subdivision and selecting a specific section of the mesh to save.
More information, including the source code is available at the Play + Learn page.
Watch the quick video overview below to before you get started with the applet.