[1] 次の [[CSS特性]]があります。

[FIG(short list)[
- [CODE(CSS)@en[[[nav-index]]]]
- [CODE(CSS)@en[[[nav-up]]]]
- [CODE(CSS)@en[[[nav-down]]]]
- [CODE(CSS)@en[[[nav-left]]]]
- [CODE(CSS)@en[[[nav-right]]]]
]FIG]

[2] [CODE(HTMLa)@en[[[tabindex]]]], [[空間ナビゲーション]]も参照。

[3] [CITE@en['''['''css-ui-3''']''' Marked the nav-* properties at risk]]
([[frivoal]]著, [TIME[2017-01-26 18:03:51 +09:00]])
<https://github.com/w3c/csswg-drafts/commit/5b6377999ca0fd7e8dc1c02d7ea10b3ed6f175cc>

[4] [CITE@en['''['''css-ui''']''' Move nav-* from l3 to l4]]
([[frivoal]]著, [TIME[2017-08-10 21:36:58 +09:00]])
<https://github.com/w3c/csswg-drafts/commit/4e5fae039a49f84e614884a83f7963273f964e2e>