The strict conditions in this ``contractors provision'' are needed so that it

cannot be twisted to fit other activities, such as making a program available

to downstream users or customers.  By making the limits on this provision

full freedoms of the GPL that they deserve.

The FSF was specifically asked to add this ``contractors provisions'' by

from circumventing technological measures that implement DRM\@.  Since this

is part of copyright law and the GPL is primarily a copyright license, and

since what the DMCA calls ``circumvention'' is simply ``modifying the

provisions are not applicable to the GPLv3'd software.  GPLv3\S3 shields

users from being subjected to liability under anti-circumvention law for

exercising their rights under the GPL, so far as the GPL can do so.