
  TYPE
    ift$connection_attribute_keys =
      (ifc$attention_character_action, ifc$break_key_action,
      ifc$end_of_information, ifc$input_block_size,
      ifc$input_editing_mode, ifc$input_output_mode,
      ifc$input_timeout, ifc$input_timeout_length,
      ifc$input_timeout_purge, ifc$null_connection_attribute,
      ifc$partial_char_forwarding, ifc$prompt_file,
      ifc$prompt_file_identifier, ifc$prompt_string,
      ifc$store_backspace_character, ifc$store_nuls_dels,
      ifc$trans_character_mode, ifc$trans_forward_character,
      ifc$trans_length_mode, ifc$trans_message_length,
      ifc$trans_terminate_character, ifc$trans_timeout_mode,
      ifc$trans_protocol_mode);

  CONST
    ifc$min_connection_key = ifc$attention_character_action,
    ifc$max_connection_key = ifc$trans_protocol_mode;

