Meta: alternate version at paywall

For images that have an alternative version available behind a paywall at the source, such as a nude depiction of a character who is clothed in a freely released version.

Alternate versions behind paywalls should NOT be uploaded onto the site. If alternate versions behind a paywall are later made public and uploaded to the site, please remove this tag.

Do not use this tag in conjunction with alternate_version_at_source unless there are free and public alternate versions available.