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=pod
=for vim
   vim: tw=72 ts=3 sts=3 sw=3 et ai :
=encoding utf8
=head1 NAME
Data::Annotation::Util
=head1 SYNOPSIS
   use Data::Annotation::Util qw< o overlay >;
   my $ov = o(\%data);  # same as overlay(\%data);
=head1 DESCRIPTION
Utility functions.
=head1 INTERFACE
=head2 C<< o >>
Same as L</overlay>.
=head2 C<< overlay >>
   my $o = overlay(\%data_structure);
Instantiate a L<Data::Annotation::Overlay> taking the provided
C<%data_structure> for the underlay. It's also possible to pass additional
parameters that will be passed on to the constructor.
=head1 ANYTHING ELSE (INCLUDING AUTHOR, COPYRIGHT AND LICENSE)
See documentation for L<Data::Annotation>.
=cut