SIC APPEND

        [SIC\]SIC APPEND FirstFile FileAppended

    Append file "FirstFile" to file "FileAppended". It is equivalent to Unix
    command
            cat FirstFile >> FileAppended
    but system independent.

    The error status on return is ruled by the switch SIC SYSTEM  (see  HELP
    for details). The default is to raise an error if an error occurs during
    the concatenation.