libheilanextras Notes
---------------------

libheilanextras is a library containing my own, mostly experimental, additional
nodes, as well as a couple of extra navigation types.  You can find html
documentation on all the nodes and navigation types in the doc/libheilanextras
directory.

If you need information about the standard X3D nodes, go here:
http://www.web3d.org/x3d/specifications/ISO-IEC-19775-X3DAbstractSpecification/
(bearing in mind that some nodes' attributes, and some keywords, are not
implemented yet)