</p>

<h2 id="Notation">Notation</h2>
<p>
The syntax is specified using a
<a href="https://en.wikipedia.org/wiki/Wirth_syntax_notation">variant</a>
of Extended Backus-Naur Form (EBNF):
</p>

<pre class="grammar">
Syntax      = { Production } .
Production  = production_name "=" [ Expression ] "." .
Expression  = Term { "|" Term } .
Term        = Factor { Factor } .

Antarctica/Davis Antarctica/DumontDUrville Antarctica/Macquarie Antarctica/Mawson Antarctica/McMurdo Antarctica/Palmer Antarctica/Rothera Antarctica/South_Pole Antarctica/Syowa Antarctica/Troll Antarctica/Vostok Arctic/Longyearbyen Asia/Aden Asia/Almaty Asia/Amman Asia/Anadyr Asia/Aqtau Asia/Aqtobe Asia/Ashgabat Asia/Ashkhabad Asia/Atyrau Asia/Baghdad Asia/Bahrain Asia/Baku Asia/Bangkok Asia/Barnaul Asia/Beirut Asia/Bishkek Asia/Brunei Asia/Calcutta Asia/Chita Asia/Choibalsan Asia/Chongqing Asia/Chungking Asia/Colombo...

// https://www.iana.org/domains/root/db/gallup.html
gallup

// game : XYZ.COM LLC
// https://www.iana.org/domains/root/db/game.html
game

// games : Dog Beach, LLC
// https://www.iana.org/domains/root/db/games.html
games

// gap : The Gap, Inc.
// https://www.iana.org/domains/root/db/gap.html
gap

// garden : Registry Services, LLC

* Fixed issue with kubectl proxy so it will now proxy an empty path - e.g. http://localhost:8001 ([#39226](https://github.com/kubernetes/kubernetes/pull/39226), [@luksa](https://github.com/luksa))
* Fixed an issue where commas were not accepted in --from-literal flags for the creation of secrets. ([#35191](https://github.com/kubernetes/kubernetes/pull/35191), [@SamiHiltunen](https://github.com/SamiHiltunen))

- Updated command descriptions and examples for grammar and punctuation consistency. ([#103524](https://github.com/kubernetes/kubernetes/pull/103524), [@bergerhoffer](https://github.com/bergerhoffer)) [SIG Auth and CLI]

* `kubectl run --env` no longer supports CSV parsing. To provide multiple env vars, use the `--env` flag multiple times instead of having env vars separated by commas. E.g. `--env ONE=1 --env TWO=2` instead of `--env ONE=1,TWO=2`. ([#47460](https://github.com/kubernetes/kubernetes/pull/47460), [@mengqiy](https://github.com/mengqiy))