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Insert SVG images in Microsoft Office
https://support.office.com/ja-jp/article/Insert-SVG-images-in-Microsoft-Office-69f29d39-194a-4072-8c35-dbe5e7ea528c?ui=ja-JP&rs=ja-JP&ad=JP
https://developer.mozilla.org/en-US/docs/Web/SVG/SVG_animation_with_SMIL
Although Chrome 45 deprecated SMIL in favor of CSS animations and Web animations, the Chrome developers have since suspended that deprecation.
https://caniuse.com/#search=animation
As of Chrome 45 & Opera 32 SMIL is deprecated and usage will result in a warning in the console. Support is expected to be dropped in some future version.