ol = library("oscillator.lib"); fl = library("filter.lib"); el = library("effect.lib"); process = // ol.oscr_demo : el.cubicnl_demo : fl.spectral_level_demo <: _,_; vgroup("[1]",ol.oscr_demo) : vgroup("[2]",el.cubicnl_demo) : vgroup("[3]",fl.spectral_level_demo) <: _,_;