A point represents a substance particle and determines its intensive state variables: pressure, temperature, heat capacity, enthalpy, entropy, internal energy, exergy, quality, absolute or relative humidity etc. A point is identified by a name and that of the substance associated with it.

To calculate it, you must:

- either enter at least two of its state variables, typically pressure and temperature for open systems, or mass, volume and temperature for closed systems;

- or automatically determine it by using one of the processes