The CsMaxDa statistic computes the maximum delta-activation (change
in activation) for any unit in the network. This is used to stop
settling once the network has reached equilibrium. The stopping
criterion for this statistic is the tolerance with which equilibrium is
measured. It is created by default if the deterministic
flag is
checked in the CsSettle process when it is created, which can be
done by using the `cs_det.def' defaults (det = deterministic).
This stat typically goes in the settle process loop_stats
.