[5] 
[DFN[or]] は、[[包括的]]でも[[排他的]]でもあり得る時、
[[包括的]] (「[VAR[...]] or [VAR[...]], but not both」) と明記しない限り、
[[包括的]]な [[or]] (「[VAR[...]] or [VAR[...]], or both」)
を表します。 [SRC[>>4]]

* 仕様書

[REFS[
-  [4] [CITE@en[Infra Standard]] ([TIME[2018-09-13 23:21:15 +09:00]]) <https://infra.spec.whatwg.org/#terminology>
]REFS]

* 歴史

[1] [CITE@en[Inline the infinite/NaN argument handling in 2d canvas methods]]
([[zcorpan]]著, [TIME[2016-09-30 22:38:34 +09:00]])
<https://github.com/whatwg/html/commit/6f2c0e884e3a7974637514b04e62f7352b6e405d>

[2] [CITE@en[Editorial: refactor to depend on the Infra Standard]]
([[domenic]]著, [TIME[2016-11-17 07:29:00 +09:00]])
<https://github.com/whatwg/html/commit/4ac633e08c2c9430853fc8322943bc2438ed36a3>

[3] [CITE@en[Editorial: tweak grammar in the definition of "or"]]
([[domenic]]著, [TIME[2016-11-19 04:35:24 +09:00]])
<https://github.com/whatwg/infra/commit/aeda0eaafea2d945650c5f1845625dc25a1e2ab0>