CU4CU product label means that you can only :

- use for & on a tag : NO LICENSE NEEDED

- add in a PU Kit for resale : NO LICENSE NEEDED

- add in a CU Pack for resale : REQUIRES A CU4CU LICENSE

The label "CU4PU" or "CU/PU" is visible on all previews.

You can find the CU4CU License here :