"Dofs": List of degree of freedom indexes (0:Tx, 1:Ty, 2:Tz, 3:Rx, 4:Ry, 5:Rz) to be released in addition to those selected via the check-boxes in the sub-menu "Joint definition". Add a 'ValueList'-component for easy selection or use 'Expand ValueLists' from the component's context menu.