"dyntermstrc_param". The method is able to plot the
time series of the parameter levels and first differences and the
empirical (partial) autocorrelation function.
"plot"(x, type = "param", ...)"dyntermstrc_param""param" (default) for the parameters,
"diffparam" for the parameter differences and
"acf" for the plot of the (partial) autocorrelation function
of the parameters.