delay_params                                       Specifies scale factor,
                                                   delay type, timescale,
                                                   and precision.
 [ -scale                    scale |                 Specifies scale factor
                                                     applied to delays.
   [ -minscale              min_scale                floating-point number/1.0
     -maxscale              max_scale ]              floating-point number/1.0
 [ - type                   [ delay_type ] ]         min, typ, max /typ
 [ -timescale               [ timescale ] ]          timescale and precision,
                                                     in that order/1 ns 10 ps
                                                     Possible values for both
                                                     timescale and precision
                                                     are {1, 10, 100} {s, ms,
                                                     us, ns, ps, fs }.
