Usage:

    /usr/bin/yamlpp-load [options] < file
    /usr/bin/yamlpp-load [options] file

Options:
    --boolean=            'perl', 'JSON::PP', 'boolean'
    --cyclic              Allow cyclic references
    --duplicate-keys      Allow duplicate keys
    --merge               Enable loading merge keys '<<'
    --require-footer      Require '...' and the end of each document
    --perl                Enable loading perl types and objects (use only
                          on trusted input!)
    --module -M           YAML::PP (default), YAML, YAML::PP::LibYAML,
                          YAML::Syck, YAML::Tiny, YAML::XS, YAML::PP::Ref
    --yaml-version=       '1.2' (default), '1.1', '1.2,1.1', '1.1,1.2'