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 ini    - Config::INI::Serializer
 dumper - Data::Dumper (including the leading $VAR1 variable assignment)
 flat   - pragmatic flat output for typical unixish cmdline usage

=head2 The 'flat' output format

The C<flat> output format is meant to support typical unixish command
line uses. It is not a strong serialization format but works well for
simple values nested max 2 levels.

Output looks like this:

=head3 Plain values

 Affe
 Tiger
 Birne

=head3 Outer hashes

One outer key per line, key at the beginning of line with a colon