[3] IRC logs: freenode / #whatwg / 20120425 ( ( 版)) http://krijnhoetmer.nl/irc-logs/whatwg/20120425#l-806
[4] Web Applications 1.0 r7120 Simplify the TextTrackCue constructor now that the object's properties are all mutable. ( ( 版)) http://html5.org/tools/web-apps-tracker?from=7119&to=7120
[5] Web Applications 1.0 r7742 Split TextTrackCue into an abstract TextTrackCue interface and a WebVTT-specific interface WebVTTCue. ( ( 版)) http://html5.org/tools/web-apps-tracker?from=7741&to=7742
[6] Draft for summary of an HTMLCue proposal (Andreas Tai著, ) https://lists.w3.org/Archives/Public/public-tt/2015Aug/0009.html
[7] explainers/texttracks at main · WebKit/explainers · GitHub, https://github.com/WebKit/explainers/tree/main/texttracks