> Sound.SC3.UGen.Help.viewSC3Help "Operator.tanh"
    > :t tanh

> import Sound.SC3 {- hsc3 -}

> g_01 =
>     let e = xLine KR 0.1 10 10 DoNothing
>         o = fSinOsc AR 500 0.0
>     in tanh (o * e) * 0.25