Add commment

asn1_value_editor/sdlHandler.py

@@ -643,6 +643,8 @@ class sdlHandler(QObject):
     def random_step(self):
         ''' One step of random simulation '''
         def send_random_tc(name, asn1_ty=None):
+            ''' Send a TC by clicking on the Send button automatically
+                Doing so enables Undo/Redo, MSC Trace, etc. '''
             if name not in self.active_tc:
                 return
             if name in self.buttons: