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This document is intended to be a User's Guide to Hydra. It is aimed toward the standards development engineers and other technical users who may be interested in using Hydra. Hydra is a three-dimensional XML viewer/editor that was developed to aid in standards development efforts. Its purpose is to allow rapid, large-scale visualization of the overall structure of an XML document, easily human-comprehensible searching, and easy editing. It uses OpenGL to display the XML document as a 3D tree structure that can be manipulated in various ways by the user.
Aronoff, M.
(2004),
Hydra User's Guide, NIST Interagency/Internal Report (NISTIR), National Institute of Standards and Technology, Gaithersburg, MD
(Accessed June 5, 2023)