--- /dev/null
+ol = library("oscillator.lib");
+el = library("effect.lib");
+fl = library("filter.lib");
+
+process =
+// ol.sawtooth_demo <:
+// el.gate_demo : el.compressor_demo :> fl.spectral_level_demo <: _,_;
+ vgroup("[1]", ol.sawtooth_demo) <:
+ vgroup("[2]", el.gate_demo) :
+ vgroup("[3]", el.compressor_demo) :>
+ vgroup("[4]", fl.spectral_level_demo) <:
+ _,_;