Section Header
    + name := SIGNED_INTEGER;
    - comment := "Generic Signed Integer.";
Section Insert
    - parent_integer:INTEGER :=
Section Public
    - append_in buffer:STRING <-
        Append in the `buffer' the equivalent of `to_string'. No new STRING
        creation during the process.
    - to_octal:SELF <-
        Gives coresponding octal value.
Hashing:
    - hash_code:INTEGER <-
Bound test
    - bound_test low:INTEGER_64 to up:UINTEGER_64 :BOOLEAN <-