Manual:$wgCanonicalNamespaceNames

Namespaces: $wgCanonicalNamespaceNames
Canonical namespace names.
Introduced in version:1.2.0
Removed in version:Still in use
Allowed values:(array)
Default value:NamespaceInfo::CANONICAL_NAMES (1.37+)

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Canonical namespace names.

  Warning: Must not be changed directly in configuration or by extensions, use $wgExtraNamespaces instead.