Manual:$wgCheckCopyrightUpload

Copyright: $wgCheckCopyrightUpload
Set this to false if you want to disable checking that detailed copyright information values are not empty.
Introduced in version:1.3.0
Removed in version:1.5.0 (r10168)
Allowed values:(boolean)
Default value:true

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Set this to false if you want to disable checking that detailed copyright information values are not empty.