1. audiotrack api: language

2. canvasrenderingcontext2d api: lang

3. htmlelement api: lang

4. languagedetector api

5. languagedetector api: `availability()` static method

6. languagedetector api: `create()` static method

7. languagedetector api: `destroy()` instance method

8. languagedetector api: `detect()` instance method

9. languagedetector api: `inputquota` property

10. languagedetector api: `measureinputusage()` instance method

11. languagemodel api

12. languagemodel api: append

13. languagemodel api: availability_static

14. languagemodel api: clone

15. languagemodel api: `contextoverflow` event

16. languagemodel api: contextusage

17. languagemodel api: contextwindow

18. languagemodel api: create_static

19. languagemodel api: destroy

20. languagemodel api: measurecontextusage

21. languagemodel api: prompt

22. languagemodel api: promptstreaming

23. navigator api: language

24. navigator api: languages

25. ndefrecord api: lang

26. notification api: lang

27. offscreencanvasrenderingcontext2d api: lang

28. speechrecognition api: lang

29. speechsynthesisutterance api: lang

30. speechsynthesisvoice api: lang

31. texttrack api: language

32. videotrack api: language

33. window api: `languagechange` event

34. workernavigator api: language

35. workernavigator api: languages

36. css property: font-language-override

37. css selector: `:lang()`

38. css selector: `:lang()`: comma-separated list of language codes as `:lang(a, b)`

39. css selector: `:lang()`: matching language codes with wildcards as `:lang(*-latn)`

40. html attribute: lang

41. headers http header: permissions-policy: language-model

42. javascript built-in: intl: locale: language

43. global_attributes: lang