> Sound.SC3.UGen.Help.viewSC3Help "Done"
    > Sound.SC3.UGen.DB.ugenSummary "Done"

> import Sound.SC3 {- hsc3 -}

> g_01 =
>     let x = mouseX KR (-1) 1 Linear 0.1
>         e = linen x 0.1 0.1 0.5 DoNothing
>         o1 = sinOsc AR 880 0 * 0.1
>         o2 = sinOsc AR 440 0 * e
>     in mce [done e * o1,o2]