Diff of 3D/DataSet

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*. [#s6221005]
- GEMSTONE RENDERS.
--   http://3dlapidary.com/HTML/Renders.htm

* PLATEAU [#b404caed]

- PLATEAU
--  https://www.mlit.go.jp/plateau/
--  https://www.geospatial.jp/ckan/dataset/plateau
- [[PLATEAU]]