* 仕様書

[REFS[
- [2] [CITE@en-US[DOM Standard]] ([TIME[2014-06-23 14:49:32 +09:00]] 版) <http://dom.spec.whatwg.org/#concept-traversal-root>
- [1] [CITE@en-US[DOM Standard]] ([TIME[2014-06-23 14:49:32 +09:00]] 版) <http://dom.spec.whatwg.org/#dom-nodeiterator-root>
- [3] [CITE@en-US[DOM Standard]] ([TIME[2014-06-23 14:49:32 +09:00]] 版) <http://dom.spec.whatwg.org/#dom-treewalker-root>
]REFS]