L'ho notato nell'intestazione di qualche codice sorgente
This core is written with the advise and consent of [author] and is
released under the GNU Public License. This core is freely available for
use in any freeware project, subject to the following terms:
Any modifications to this code must be duly noted in the source and
approved by [author] and [maintainer] prior to public submission.
Quali sono le implicazioni di questa clausola in merito alla libertà del codice?