Unfold Hierarchy number Tags Values

      Information in Tree
        1  Information In Tree
            1.1  Examples
                1.1.1  Taxonomy
https://www.zhihu.com/question/41580677/answer/1300242801
                    1.1.1.1  Non-cellular life
                        1.1.1.1.1  Virus
                            1.1.1.1.1.1  DNA Virus   Exam focus   Master
                            1.1.1.1.1.2  RNA Virus   Exam focus   Further reading   May make mistake   Confused
                    1.1.1.2  Cellular life
                        1.1.1.2.1  Prokaryota
                            1.1.1.2.1.1  Archaea   May make mistake
                        1.1.1.2.2  Eukaryote
                            1.1.1.2.2.1  Kingdom Protista   May make mistake   Confused
                            1.1.1.2.2.2  Kingdom Plantae
                                1.1.1.2.2.2.1  Spore Plant   Exam focus   Master
                                1.1.1.2.2.2.2  Seed Plant
                                    1.1.1.2.2.2.2.1  Gymnospermae
                                    1.1.1.2.2.2.2.2  Angiosperms
                            1.1.1.2.2.3  Kingdom Animalia
                                1.1.1.2.2.3.1  Subkingdom Protozoa
                                    1.1.1.2.2.3.1.1  Phylum Protozoa
                                1.1.1.2.2.3.2  Subkingdom Mesozoa
                                    1.1.1.2.2.3.2.1  Phylum Mesozoa
                                1.1.1.2.2.3.3  Subkingdom Metazoa
                                    1.1.1.2.2.3.3.1  Protostomia
                                    1.1.1.2.2.3.3.2  Deuterostomia
                            1.1.1.2.2.4  Kingdom Fungi

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