Functionings must be endorsed and voluntarily (or freely) chosen, rather than forced; but no hyperactive notion of freedom as control is involved here.
The contracting parties voluntarily agree at the constitutional level to be subject to binding constraints at the sub-constitutional level.
The vast majority of incoming clients did not attend the program voluntarily.
It may be that a person is fully voluntarily choosing to slice off a limb.
It is a good reason when, but only when, such harm is not voluntarily chosen.
Furthermore, agents' ability to exit voluntarily social groups strongly signaled their credibility to existing group members where they stayed.
However, the government cannot prevent the social partners making insurance agreements 'voluntarily' or 'privately'.
Conventions are at least in theory express agreements, voluntarily entered into between the heads of (or other representatives of) states.
