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