code: def print_menuconfig_nodes(node, indent):
      
      while node:
          string = node_str(node)
          if string:
              indent_print(string, indent)
  
          if node.list:
              print_menuconfig_nodes(node.list, indent + 8)
  
          node = node.next
docs: Prints a tree with all the menu entries rooted at 'node'. Child menu
      entries are indented.