[FIG(quote)[
[FIGCAPTION[
[1] [CITE@en[XML Signature Syntax and Processing Version 2.0]]
([TIME[2013-02-05 03:22:09 +09:00]] 版)
<http://www.w3.org/2008/xmlsec/Drafts/xmldsig-core-20/#sec-ReferenceProcessingModel>
]FIGCAPTION]

> In this specification, a 'same-document' reference is defined as a URI-Reference that consists of a hash sign ('#') followed by a fragment or alternatively consists of an empty URI '''['''URI''']'''.

]FIG]


[2] [CITE@en['''['''css-values''']''' Revert the 'url(#foo) in an external stylesheet refers t…]]
( ([[tabatkins]]著, [TIME[2016-06-09 06:39:11 +09:00]]))
<https://github.com/w3c/csswg-drafts/commit/cc473b6c8de6c7ac57ab7559faf8cd0c47f7826c>

[3] [CITE@en[Make fragment-only URLs always same-document. Closes #61.']]
( ([[nikosandronikos]]著, [TIME[2016-06-21 22:37:02 +09:00]]))
<https://github.com/w3c/svgwg/commit/f378b15b95841cb1297eda7b1a6a2ca2d549ee71>

[FIG(quote)[
[FIGCAPTION[
[4] [CITE@en[amphtml/amp-html-format.md at master · ampproject/amphtml]]
([TIME[2016-07-04 11:17:14 +09:00]])
<https://github.com/ampproject/amphtml/blob/master/spec/amp-html-format.md>
]FIGCAPTION]

> "xlink:href": only URIs starting with "#" are allowed

]FIG]