placeholder doc

couldn't find a better spot to document envars?
kubernetes · Nov 8, 2022 · 935f0fd · 935f0fd
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diff --git a/content/en/docs/reference/kubectl/cheatsheet.md b/content/en/docs/reference/kubectl/cheatsheet.md
@@ -464,6 +464,15 @@ Verbosity | Description
 `--v=8` | Display HTTP request contents.
 `--v=9` | Display HTTP request contents without truncation of contents.
 
+## Environment Variables
+
+There are a few environment variables kubectl respects to change functionality:
+
+
+| Added | Removed | Variable Name              | Description
+|-------|---------|----------------------------| -----------
+| v1.26 | -       |`KUBECTL_EXPLAIN_OPENAPIV3` | Toggles whether calls to `kubectl explain` use the new OpenAPIv3 data source available. OpenAPIV3 is enabled by default since Kubernetes 1.24.
+
 ## {{% heading "whatsnext" %}}
 
 * Read the [kubectl overview](/docs/reference/kubectl/) and learn about [JsonPath](/docs/reference/kubectl/jsonpath).