NAME
    isbn-format - Script to format ISBN.

SYNOPSIS
     isbn-format [-h] [--version] isbn_string

DESCRIPTION
    Vision of this module is:

     * Support ISBN 13 and ISBN 10 formats.
     * Detect if ISBN is valid.
     * Convert ISBN to pretty print value.

ARGUMENTS
    *       "-h"

            Print help.

    *       "--version"

            Print version of script.

    *       "isbn_string"

            ISBN number string.

EXAMPLE1
     isbn-format 9788025343364

     # Output:
     # 9788025343364 -> 978-80-253-4336-4

EXAMPLE2
     isbn-format 9788025343363

     # Output:
     # 9788025343364 -> 978-80-253-4336-4

EXAMPLE3
     isbn-format 978802534336

     # Output:
     # ISBN '978802534336' is bad.

REPOSITORY
    <https://github.com/michal-josef-spacek/App-ISBN-Format>

AUTHOR
    Michal Josef Špaček <mailto:skim@cpan.org>

    <http://skim.cz>

LICENSE AND COPYRIGHT
    © 2022 Michal Josef Špaček

    BSD 2-Clause License

VERSION
    0.01

