update comment to make things clear

DietmarSchwertberger · DietmarSchwertberger · commit ffd500c92936 · 2018-02-11T17:50:53.000+01:00
diff --git a/examples/user_interfaces/fourier_demo_wx_sgskip.py b/examples/user_interfaces/fourier_demo_wx_sgskip.py
@@ -180,9 +180,9 @@ def mouseUp(self, evt):
         self.state = ''
 
     def createPlots(self):
-        # this method creates subplots, adds labels etc.
-        # later, when the waveforms or sliders are dragged,
-        # only the data will be updated
+        # This method creates the subplots, waveforms and labels.
+        # Later, when the waveforms or sliders are dragged, only the
+        # waveform data will be updated (not here, but below in setKnob).
         if not hasattr(self, 'subplot1'):
             self.subplot1, self.subplot2 = self.figure.subplots(2)
         x1, y1, x2, y2 = self.compute(self.f0.value, self.A.value)
