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# Represents
# AA Sections are cool
...
                 }
               ];

recurse_section( $sections );

...
        $vaportrail[ $#vaportrail ]++
    }
}

# Add a supersection above "They are extremely cool"
my $moving_section = $sections->[1];
$sections->[1] = { content => 'And moving sections is easy too!', subs
+ecs => [ $moving_section ] };
recurse_section( $sections );