<!--
#
# X3D Web3D Extensions Private DTD:
#
#	https://www.web3d.org/specifications/x3d-4.1-Web3dExtensionsPrivate.dtd
#
#	version:          4.1
#	created:          13 December 2025
#	revised:          see version control history
#
#	Maintainer:       Don Brutzman
#
# Purpose: support Web3D Consortium extensions to the X3D tagset.
# The primary Extensible 3D (X3D) Document Type Definition (DTD)
# is augmented by node definitions in x3d-4.1-Web3dExtensionsPublic.dtd
# and x3d-4.1-Web3dExtensionsPrivate.dtd
#
# X3D Specification DTDs:
#	https://www.web3d.org/specifications/x3d-4.1.dtd
#	https://www.web3d.org/specifications/x3d-4.1-InputOutputFields.dtd
#	https://www.web3d.org/specifications/x3d-4.1-Web3dExtensionsPublic.dtd
#	https://www.web3d.org/specifications/x3d-4.1-Web3dExtensionsPrivate.dtd
#
# Web3D extensions update URL:
#	https://www.web3d.org/x3d/content/x3d-4.1-Web3dExtensionsPublic.dtd
#
# changelog:
#	https://www.web3d.org/specifications/x3d-dtd-changelog.txt
#
-->

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