         return str
     }
     
-    static func generateZone(id: Int,
+    static public func generateZone(id: Int,
                              rootNote: Int,
                              startNote: Int,
                              endNote: Int,

        return str
    }

    static func generateLayer(connections: String,
                              envelopes: String = "",
                              filter: String = "",
                              lfos: String = "",

        return str
    }
    
    static public func generateEnvelope(id: Int = 0,
                                 delay: Double = 0.0,
                                 attack: Double = 0.0,
                                 hold: Double = 0.0,
