/*! \defgroup virtrev VIRTREV Extensions (Stable) \brief Extensions develop and maintain by Mathieu [matrem] Roumillac (http://www.opengl.org/discussion_boards/ubbthreads.php?ubb=showprofile&User=22660). **/ /*! \defgroup virtrev_xstream xml like output \ingroup virtrev \brief Streaming vector and matrix in a xml way. Include for this functionality. **/