anchor.diff:  %%--------------------------------------------------------------------
   -spec handle_service_user() -> [handle_service_privilege()].
   handle_service_user() ->
  -    [view_handle_service].
  +    [view_handle_service, register_handle].
   
   %%--------------------------------------------------------------------
   %% @doc A privilege level of a handle_service administrator. This level contains all
  
positive.code: 
  %% User privileges with regards to handle service.
  -type handle_service_privilege() :: register_handle_service |
  list_handle_services | delete_handle_service | modify_handle_service |
  view_handle_service.
  
  %% User privileges with regards to handle.
  -type handle_privilege() :: register_handle | list_handles | delete_handle |
  modify_handle | view_handle.
  
  %%%===================================================================
  %%% API
  
negative.code:     ordsets:union(
          handle_user(),
          ordsets:from_list([
              list_handles,
              delete_handle,
              modify_handle,
  