parameters: (self)
docstring: Handle add button for the help list.
  
          Query for name and location of new help sources and add
          them to the list.
docstring_summary: Handle add button for the help list.
docstring_tokens: Handle add button for the help list .
function: def helplist_item_add(self):
          """Handle add button for the help list.
  
          Query for name and location of new help sources and add
          them to the list.
          """
          help_source = HelpSource(self, 'New Help Source').result
          if help_source:
              self.user_helplist.append(help_source)
              self.helplist.insert(END, help_source[0])
              self.update_help_changes()
function_tokens: def helplist_item_add ( self ) : help_source = HelpSource ( self , 'New Help Source' ) . result if help_source : self . user_helplist . append ( help_source ) self . helplist . insert ( END , help_source [ 0 ] ) self . update_help_changes ( )