[1] Defer hatch gradients to future version of SVG (dstorey著, 2018-05-16 07:36:52 +09:00) https://github.com/w3c/svgwg/commit/2186636979603989b6713fa95939f524381b0781

[2] Remove hatch gradients by dstorey · Pull Request #451 · w3c/svgwg (2019-02-18 12:15:16 +09:00) https://github.com/w3c/svgwg/pull/451