What we have:
With the introduction of structured data, there's a need to inform users that some types of contributions must be released under the CC0 license. Currently, for captions, that is done with a notification at the bottom of the Describe step in UploadWizard.
What we need:
The header for the license box might need a little additional language to be more obvious/clear. Please change the existing header to:
"License for captions contributions only (this applies to caption text, NOT the file)"