1. CSS Anchor Positioning

    Allows placing elements anywhere on the page relative to an "anchor element", without regard to the layout of other elements besides their containing block

  2. :has() CSS relational pseudo-class

    Select elements containing specific content. For example, `a:has(img)` selects all `<a>` elements that contain an `<img>` child.

  3. CSS Relative color syntax

    Relative color syntax in CSS allows a color to be defined relative to another color using the `from` keyword and optionally `calc()` for any of the color values.

  4. rel=noopener

    Ensure new browsing contexts are opened without a useful `window.opener`

  5. relList (DOMTokenList)

    Method of easily manipulating rel attribute values on elements, using the DOMTokenList object (similar to classList).

  6. attr api: ownerelement

  7. htmlareaelement api: rel

  8. htmlbrelement api

  9. htmlformelement api: rel

  10. htmlformelement api: rellist

  11. htmlhrelement api

  12. htmlhrelement api: align

  13. htmlhrelement api: color

  14. htmlhrelement api: size

  15. htmlhrelement api: width

  16. htmllinkelement api: rel

  17. htmllinkelement api: rellist

  18. htmlmeterelement api

  19. htmlmeterelement api: low

  20. htmlmeterelement api: min

  21. location api: reload

  22. mlgraphbuilder api: relu

  23. navigation api: reload

  24. svgaelement api: rel

  25. svgaelement api: rellist

  26. svgfefuncrelement api

  27. svgfilterelement api

  28. svgfilterelement api: x

  29. svgfilterelement api: y

  30. html element: area: `target="_blank"` implies `rel="noopener"` behavior

  31. html element: area: rel

  32. html element: area: rel: noopener

  33. html element: area: rel: noreferrer

  34. html element: a: `target="_blank"` implies `rel="noopener"` behavior

  35. html element: a: rel

  36. html element: a: rel: noopener

  37. html element: a: rel: noreferrer

  38. javascript built-in: intl: relativetimeformat: format

  39. javascript built-in: intl: relativetimeformat: formattoparts

  40. javascript built-in: intl: relativetimeformat: `relativetimeformat()` constructor

  41. javascript built-in: intl: relativetimeformat: `relativetimeformat()` constructor: `locales` parameter

  42. javascript built-in: intl: relativetimeformat: `relativetimeformat()` constructor: options_parameter: `options.localematcher` parameter

  43. javascript built-in: intl: relativetimeformat: `relativetimeformat()` constructor: options_parameter: `options.numberingsystem` parameter

  44. javascript built-in: intl: relativetimeformat: `relativetimeformat()` constructor: options_parameter: `options.numeric` parameter

  45. javascript built-in: intl: relativetimeformat: resolvedoptions

  46. javascript built-in: intl: relativetimeformat: supportedlocalesof

  47. svg element: a: rel