diff --git a/smstool.py b/smstool.py
index 4176d0e..e1a16b2 100644
--- a/smstool.py
+++ b/smstool.py
@@ -8,6 +8,8 @@ SMSLEN = 160
 
 class SimserFrame(wxFrame):
   def __init__(self, parent, id, title):
+
+    # Create GUI
     wxFrame.__init__(self, parent, id, title,
              wxPoint(100, 100), wxSize(450, 70))
 
@@ -29,10 +31,10 @@ class SimserFrame(wxFrame):
                   wxDLG_PNT(panel, wxPoint(30, 20)),
                   wxDLG_SZE(panel, wxSize(60, -1)))
   
-    self.fooCtrl = wxButton(panel, 10, "Senden",
+    self.sendCtrl = wxButton(panel, 10, "Senden",
                   wxDLG_PNT(panel, wxPoint(100, 20)),
                   wxDLG_SZE(panel, wxSize(30, -1)))
-    EVT_BUTTON(self, 10, self.OnFooClick)
+    EVT_BUTTON(self, 10, self.OnSendClick)
 
     self.zaehler = wxStaticText(panel, -1, str(SMSLEN),
            wxDLG_PNT(panel, wxPoint(150, 20)), wxDefaultSize)
@@ -42,7 +44,7 @@ class SimserFrame(wxFrame):
   def OnCloseWindow(self, event):
     self.Destroy()
 
-  def OnFooClick(self, event):
+  def OnSendClick(self, event):
     text = self.textCtrl.GetValue()
     nr   = self.nrCtrl.GetValue()
 
@@ -50,6 +52,7 @@ class SimserFrame(wxFrame):
     text = sub("'", "''", text)
     nr = sub("'", "''", nr)
 
+    # Send SMS and report back
     rc = system("echo '" + text + "' | gsmsendsms '" + nr + "'")
     if(rc == 0):
       self.foodialog = wxMessageDialog(self.panel, 
@@ -59,8 +62,6 @@ class SimserFrame(wxFrame):
       self.foodialog = wxMessageDialog(self.panel,
                        "gsmsendsms returned error code: " + str(rc >> 8),
                        "Error", wxOK, wxPoint(100, 100))
-    
-
 
     self.foodialog.Show(true)