[1] [CITE@en[Accessibility Conformance Testing (ACT) Rules Format 1.0]]
([TIME[2017-04-05 03:57:15 +09:00]])
<https://www.w3.org/TR/act-rules-format/>

[2] [CITE@en[Accessibility Conformance Testing (ACT) Rules Format 1.0]]
([TIME[2017-09-08 22:10:13 +09:00]])
<https://www.w3.org/TR/2017/WD-act-rules-format-1.0-20170912/>

[3] [CITE@en[Accessibility Conformance Testing (ACT) Rules Format 1.0]] ([TIME[2018-03-06 22:49:13 +09:00]]) <https://www.w3.org/TR/2018/WD-act-rules-format-1.0-20180308/>