A proof of concept demonstrating the
possibility of extending the SVG spec to include a
tag for the purposes of extending functionality into three primary areas: 1. richer classes of gradients, 2. extensions to new classes of patterns and 3. new types of 2.5 dimensional objects*.
The element is seen as having a similar relationship to 2D space that and its cousins from the SMIL family have to time. That is, can be used to perform declarative construction of clusters of related shapes.
* SVG Open 2010 Paper/Presentation Abstract entitled A proposal for adding declarative drawing to SVG authored by Dr. David Dailey (Slippery Rock University) and coauthored by Eric Elder (Slippery Rock University)
An extension to SVG, the tag, implemente 
