default_grid.x3d using X_ITE

X_ITE X3D Browser   Test default field values. This test attempts to draw an ElevationGrid using mostly default values. The test should generate a flat default colored surface with two heights of length 1 on the right side.   

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     Original X3D model: default_grid.x3d
X3D Examples Archive: https://www.web3d.org/x3d/content/examples/ConformanceNist/Geometry/ElevationGrid/default_gridIndex.html

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