This value is an argument to the Accumulation, where it is summed to other inputs and outputs; Scaled-Entry (1311) is given by a scaled-entry-pvar (1312), and it is the scaled equivalent of the Density-Entry, with its value set and used in a way similar to that described above; Input-Rate (1313) is given by a input-rate-pvar (1314), which value is given by a simulation formula that sums all the vi