Section Header
    + name := STD_INPUT;
    - comment :=" To use the standard input file. As for UNIX, the default standard input is the keyboard.";
Section Inherit
    - parent_input_stream:INPUT_STREAM :=
Section Public
    - is_connected:BOOLEAN :=
    - read_character:CHARACTER<-
    - unread_character <-
    - last_character:CHARACTER <-
    - end_of_input:BOOLEAN <-
    - read_line_in str:STRING <-