In this context, the sense of acknowledgement a given. It is known that XFree86 requires that anyone releasing a product must publish an acknowledgement that they were distributing XFree86, with the acknowledgement in a certain format before giving distribution permission to others. The XFree86 development team was acknowledged to the amount of dollar amount (up to $200) that it gave to the development team.

What is closely related to the sense of credits at the end of a movie, acknowledging all the artists that helped in it.