[1] [CITE[518110 – nuke HTMLBaseFontElement interface]]
( ([TIME[2013-01-14 00:07:27 +09:00]] 版))
<https://bugzilla.mozilla.org/show_bug.cgi?id=518110>

[2] [CITE@en[Fix which built-in elements can be customized]]
([[domenic]]著, [TIME[2016-11-17 01:31:58 +09:00]])
<https://github.com/whatwg/html/commit/7d6b279b0d2bc30752700155a043b65441fe12e3>