This  is a  patch file for  "ghost-diagrams".  It makes  the following
changes:

      a. Zoom in slightly (change scale from 10.0 to 11.0)
      b. Add a "Quit" button
      c. Use "random" mode by default
      d. Make compatible with newer Pythons

--- ghost-diagrams.py.old
+++ ghost-diagrams.py
@@ -606,7 +606,7 @@
         scale.set_digits(1)
         scale.set_increments(1.0,1.0)
         scale.set_range(3.0, 50.0)
-        scale.set_value(10.0)
+        scale.set_value(11.0)
         scale.connect('value-changed', self.on_set_scale)
 
         random_button = gtk.Button(' Random ')
@@ -618,9 +618,13 @@
         save = gtk.Button(' Save image... ')
         save.connect('clicked', self.on_save)
 
+        quitButton = gtk.Button(' Quit ')
+        quitButton.connect('clicked', gtk.main_quit)
+
         hbox = gtk.HBox(False,5)
         hbox.set_border_width(3)
         hbox.pack_start(knot_box, False, False, 0)
+        hbox.pack_end(quitButton, False,False,0)
         hbox.pack_end(save, False,False,0)
         hbox.pack_end(reset, False,False,0)
         hbox.pack_end(random_button, False,False,0)
@@ -725,6 +729,7 @@
                 
     def run(self):
         self.window.show_all()
+        self.random()
         gtk.main()
 
 
@@ -1044,15 +1044,17 @@
                 
                     random.shuffle(item)
                     item = normalize(string.join(item,''))
-                    if item in result: raise "repeat"
+                    if item in result:
+                        raise Exception ("repeat")
                     result.append(item)
             
                 all = string.join(result,'')
                 for a, b in compatabilities.items():
-                    if a in all and b not in all: raise "repeat"
+                    if a in all and b not in all:
+                        raise Exception ("repeat")
         
                 break
-            except "repeat":
+            except:
                 pass
         
         self.combo.entry.set_text(repr(result)[1:-1])