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These scenes support the
Examples
section of the
VRML97 specification.
While the baseline source kept under version control is in .x3d form, the
autogenerated products include versions using the VRML97 .wrl file extension.
These are maintained for historic reasons and interoperability testing.
Many 3D graphics systems export VRML97.
Backwards compatibility of scenes remains a significant strength of the
X3D specification,
which includes a fully interoperable
ClassicVRML file encoding
as well as numerous
conversion and translation tools.
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