One embodiment of the invention provides a computer-implemented method for collaborative three-dimensional (3D) markup. In this embodiment, the method includes obtaining a 3D representation of a shape on a client using a web-based interface, displaying the 3D representation of the shape in a user workspace,...http://www.google.com.au/patents/US20030103089?utm_source=gb-gplus-sharePatent US20030103089 - Systems and methods for collaborative shape design
