If the pressurisation to the final pressure is selected to be by vapour phase / supercritical compression only, the fluid leaving the last compression stage is routed to export/pipeline at the final specified pressure. However, if the input to the simulation specifies liquefaction before final pressurisation via liquid pumping by specifying a liquefaction pressure P liq below the critical point, the part of the process named "Cooling, liquefaction and pumping" is activated. The involved streams are thick in the schematic. In that case, the fluid compressed in vapour phase is condensed via a refrigeration cycle followed by pumping to the final desired pressure. The process flow diagram in Figure shows the inclusion of an economiser upstream the bulk fluid condensation. This is optional, and the program also allows routing the pressurised liquid directly to export/pipeline, hence bypassing the economiser. The two main pressurisation pathways are illustrated in Figure .