Skeleton

system = "parametric_curve"   # which built-in system (see the table below)
name   = "My Rose"            # optional; defaults to the system name
representative = true         # optional; default false - see "The representative flag"

[curve]                       # or [generator] — structural config (line systems)
family = "maurer_rose"

[params]                      # named parameter -> expression string
n     = "6"
scale = "0.7 + bass * 0.4"
hue   = "0.5 + time * 0.02 + treb * 0.3"