1. Topology NSNOD NLIN NSNFIX NVES NRICON NSPR NAKC NSNOD: integer: Total number of supernodes NLIN: integer, default: NSNOD-1: Number of lines NSNFIX: integer, default: 1: Number of supernodes having one or more degrees of freedom that are fixed or prescribed NVES: integer, default: 0: Number of support vessels NRICON: integer, default: 0: Number of rigid supernode connections. Relevant for modelling of stiff connections between supernodes. The connection is described by specification of a master and a slave (dependent) node, see Rigid supernode connections NSPR: integer, default: 0: Number of global springs NAKC: integer, default: 0: Number of kill and choke lines. Relevant for modelling of tensioned risers only (Deprecated functionality) Standard system AR Seafloor contact