[1] SVG Integration 1.0 ( ( 版)) <https://svgwg.org/specs/integration/>
[2] SVG Integration Module Level 1 ( ( 版)) <https://dvcs.w3.org/hg/svg2/raw-file/tip/specs/integration/Overview.html>
[3] Scalable Vector Graphics (SVG) 2 () <https://svgwg.org/svg2-draft/single-page.html#conform-processing-modes>