The curating of the exhibition 'Stroomopwaarts' in the former departure hall of the Holland-Amerika Line in Rotterdam led to a lot of commotion amongst Rotterdam artists. During the preparations in 1995, they were all occupied with the question who could participate and who could not. This hassle raised a lot of anger in Jeanne van Heeswijk. The 'Room' was there to protect her. The door of the 'Room' was closed and as a result became the sounding board for her anger. Seven 'knockers' were placed on the walls of the 'Room' that knocked on the walls to a composition by Claus van Bebber. A computer activated the knockers when someone passed the room.