It is important that the cooperators can show their personal perspective or view to other participants, in order to support their arguments in a discussion. One way to share views is for one participant to enforce his perspective onto another user or group. Views can also be shared by means of a perspective repository, where participants can select a perspective they would like to consider. The perspectives they can choose from, must be deposited by other participants. This implies that not every participant should have to create her own perspective before joining a session. Obviously, there is a need to maintain meta-information, explaining what the perspectives are about.