hsc3-0.11: Help/UGen/Envelope/envLinen.help.lhs
> Sound.SC3.UGen.Help.viewSC3Help "Env.*linen"
> :t envLinen
> import Sound.SC3
> let {t = envLinen 0.4 2 0.4 0.1
> ;e = envGen KR 1 1 0 1 RemoveSynth t}
> in audition (out 0 (sinOsc AR 440 0 * e))