chromium/src/third_party/blink/web_tests/svg/custom/use-nested-symbol-viewport.html - manifest_repos/chromium_src - Git at Google

 <!DOCTYPE html>
 <svg width="200" height="100">
   <rect width="100" height="100" fill="red"/>
   <symbol id="inner">
     <rect width="100" height="100"/>
   </symbol>
   <symbol id="outer">
     <rect x="50%" width="100" height="100" fill="red"/>
     <use xlink:href="#inner" x="50%" fill="green"/>
   </symbol>
   <use xlink:href="#outer" transform="translate(-100, 0)"/>
 </svg>
	<!DOCTYPE html>
	<svg width="200" height="100">
	<rect width="100" height="100" fill="red"/>
	<symbol id="inner">
	<rect width="100" height="100"/>
	</symbol>
	<symbol id="outer">
	<rect x="50%" width="100" height="100" fill="red"/>
	<use xlink:href="#inner" x="50%" fill="green"/>
	</symbol>
	<use xlink:href="#outer" transform="translate(-100, 0)"/>
	</svg>