FormativeElements       Identify formative elements in taxon names at
                        Soil Order, Suborder, Great Group or Subgroup
                        level
ST                      Soil Taxonomy Hierarchy
ST_SMR_13th             Soil Moisture Regimes used in the Keys to Soil
                        Taxonomy (13th Edition)
ST_criteria_13th        Keys to Soil Taxonomy Criteria (13th Edition)
ST_family_classes       Family-level Classes for Soil Taxonomy
ST_features             Epipedons, Diagnostic Horizons, Characteristics
                        and Features in Soil Taxonomy
ST_formative_elements   Formative Elements used by Soil Taxonomy
ST_higher_taxa_codes_12th
                        Letter Code Lookup Table for Position of Taxa
                        within the Keys to Soil Taxonomy (12th Edition)
ST_higher_taxa_codes_13th
                        Letter Code Lookup Table for Position of Taxa
                        within the Keys to Soil Taxonomy (13th Edition)
SoilTaxonomyLevels      Get (Ordered) Factors based on Soil Taxonomy
                        Key position
WRB_4th_2022            World Reference Base for Soil Resources (4th
                        Edition, 2022)
code_to_level           Determine taxonomic level of a taxonomic letter
                        code
decompose_taxon_code    Decompose taxon letter codes
explainST               Explain a taxon name using formative elements
extractSMR              Extract Soil Moisture Regime from Subgroup or
                        Higher Level Taxon
getChildTaxa            Get the lower (child) taxa for a taxon name or
                        code
getLastChildTaxon       Get last child taxon in Keys at specified
                        taxonomic level
getParentTaxa           Get the higher (parent) taxa for a taxon name
                        or code
getTaxonAtLevel         Get the taxon name at the Soil Order, Suborder,
                        Great Group or Subgroup level
getTaxonCriteria        Get Taxon Criteria from the Keys to Soil
                        Taxonomy
getTaxonSMR             Lookup Pre-calculated Soil Moisture Regimes by
                        Taxon
get_ST_family_classes   Get soil family / series differentiae and class
                        names
get_ST_features         Get soil diagnostic horizons, characteristics
                        and features
isValidST               Check for valid taxonomic level (Order,
                        Suborder, Great Group, Subgroup)
level_hierarchy         Order of Hierarchical Levels in Soil Taxonomy
level_to_taxon          Get all taxa at specified level
newick_string           Generate Newick Tree Format Parenthetic Strings
parent_level            Parent/Child Hierarchy
parse_family            Parse components of a "family-level" taxon name
preceding_taxon_codes   Get taxon codes of preceding taxa
relative_taxon_code_position
                        Determine relative position of taxon within
                        Keys to Soil Taxonomy (Order to Subgroup)
taxonTree               Create a 'data.tree' Object from Taxon Names
taxon_code_to_taxon     Convert taxon code to taxon name
taxon_to_level          Determine taxonomic level of specified taxa
taxon_to_taxon_code     Convert taxon name to taxon code
