#' Define parameters in GEDCOM 5.5.5 specification
#'
#' Define all primitives used in GEDCOM records and subrecords.
#'
#' @details This empty function serves as a single location where all primitives are defined, mainly for
#' efficiency and maintainability. The first values defined are given earlier in the specification and not
#' with the rest of the primitives.
#' @name primitive_definitions
#' @param character_encoding A code value that represents the character set and encoding to be used to
#' interpret this data. Allowed values: "UTF-8" and "UNICODE" (UTF-16).
#' @param gedcom_form A value that identifies the GEDCOM form used in this GEDCOM file. The value must be
#' alphanumerical string. This string is case-sensitive. Only "LINEAGE-LINKED" is supported.
#' @param gedcom_version_number The version number of the specification used.
#'
#' @param address_city The name of the city/town used in the address.
#' @param address_country The name of the country that pertains to the associated address.
#' @param address_email An electronic address that can be used for contact such as an email address.
#' @param address_fax A FAX telephone number appropriate for sending data facsimiles.
#' @param local_address_lines The local address lines before the town/city. This can be a vector with up to 3 elements.
#' @param address_postal_code The ZIP or postal code used by the various localities in handling of mail.
#' @param address_state The name of the province, state or similar country subdivision used in the address.
#' @param address_web_page The world wide web page address.
#' @param adopted_by_which_parent A code which shows which parent in the associated family group record adopted this person.
#' Use "HUSB" for husband, "WIFE" for wife, or "BOTH" for both.
#' @param age_at_event A string that indicates the age in years, months, and days that the
#' principal was at the time of the associated event. See Details.
#' @param husband_age_at_event A string that indicates the age in years, months, and days that the
#' husband was at the time of the associated event. See Details.
#' @param wife_age_at_event A string that indicates the age in years, months, and days that the
#' wife was at the time of the associated event. See Details.
#' @param attribute_descriptor Text describing a particular characteristic or attribute assigned to an individual.
#' @param attribute_type An attribute which may have caused name, addresses, phone numbers,
#' family listings to be recorded. Its application is in helping to classify sources used for information.
#' @param automated_record_id A unique record identification number assigned to the record by
#' the source system. This number is intended to serve as a more sure means of identification
#' of a record for reconciling differences in data between two interfacing systems.
#' @param caste_name A name assigned to a particular group that this person was associated with,
#' such as a particular racial group, religious group, or a group with an inherited status.
#' @param cause_of_event Used in special cases to record the reasons which precipitated an event.
#' Normally this will be used subordinate to a death event to show cause of death, such as
#' might be listed on a death certificate.
#' @param certainty_assessment A quantitative evaluation of the credibility of a piece of
#' information, based upon its supporting evidence. Some systems use this feature to rank multiple
#' conflicting opinions for display of most likely information first. It is not intended to
#' eliminate the receiver's need to evaluate the evidence for themselves.
#' 0 = unreliable/estimated data
#' 1 = Questionable reliability of evidence
#' 2 = Secondary evidence, data officially recorded sometime after event
#' 3 = Direct and primary evidence used, or by dominance of the evidence
#' @param copyright_gedcom_file A copyright statement needed to protect the copyrights of the
#' submitter of this GEDCOM file.
#' @param copyright_source_data A copyright statement required by the owner of data from
#' which this information was downloaded.
#' @param count_of_children The known number of children of this individual from all marriages or,
#' if subordinate to a family group record, the reported number of children known to belong to this
#' family, regardless of whether the associated children are represented in the corresponding
#' structure. This is not necessarily the count of children listed in a family structure.
#' @param descriptive_title The title of a work, record, item, or object.
#' @param entry_recording_date A date_calendar(), date_period(), date_range(), or date_approximated() value
#' giving the date that this event data was entered into the original source document.
#' @param event_attribute_type A code that classifies the principal event or happening that caused the
#' source record entry to be created. If the event or attribute doesn't translate to one of these tag codes,
#' then a user supplied value is expected and will be generally classified in the category of other.
#' @param event_descriptor Text describing a particular event pertaining to the individual or family.
#' This event value is usually assigned to the EVEN tag. The classification as to the difference
#' between this specific event and other occurrences of the EVENt tag is indicated by the use of
#' a subordinate TYPE tag selected from the EVENT_DETAIL structure.
#' @param event_or_fact_classification A descriptive word or phrase used to further classify the parent
#' event or attribute tag. This should be used whenever either of the generic EVEN or FACT tags are used.
#' The value of this primitive is responsible for classifying the generic event or fact being cited.
#' @param event_type_cited_from A code that indicates the type of event which was responsible for the
#' source entry being recorded. For example, if the entry was created to record a birth of a child,
#' then the type would be BIRT regardless of the assertions made from that record, such as the mother's
#' name or mother's birth date. This will allow a prioritised best view choice and a determination of
#' the certainty associated with the source used in asserting the cited fact.
#' @param event_type_family A code used to indicate the type of family event. One of:
#' "ANUL", "CENS", "DIV", "DIVF", "ENGA", "MARB", "MARC", "MARR", "MARL", "MARS", "RESI", "EVEN".
#' @param event_type_individual A code used to indicate the type of individual event. One of:
#' "BIRT", "CHR", "DEAT", "BURI", "CREM", "ADOP", "BAPM", "BARM", "BASM", "CHRA", "CONF", "FCOM",
#' "NATU", "EMIG", "IMMI", "CENS", "PROB", "WILL", "GRAD", "RETI", "EVEN".
#' @param events_recorded An enumeration of the different kinds of events that were recorded in a
#' particular source. Each enumeration is separated by a comma. Such as a parish register of births,
#' deaths, and marriages would be BIRT, DEAT, MARR.
#' @param file_creation_date A date_exact() object giving the date that this file was created.
#' @param gedcom_content_description A note that a user enters to describe the contents of the
#' lineage-linked file in terms of "ancestors or descendants of" so that the person receiving
#' the data knows what genealogical information the file contains.
#' @param gedcom_file_name The name of the GEDCOM file. A GEDCOM file name should use the format
#' basename.ext, and use the file extension .GED (or .ged).
#' @param id_number A third-party number assigned to an individual.
#' @param language_of_text The human language in which the data in the file is normally read or
#' written. It is used primarily by programs to select language-specific sorting sequences and phonetic
#' name matching algorithms.
#' @param multimedia_file_reference A complete local or remote file reference to the auxiliary data
#' to be linked to the GEDCOM context. Remote reference would include a network address where the multimedia
#' data may be obtained.
#' @param multimedia_format Indicates the format of the multimedia data associated with the specific
#' GEDCOM context. This allows processors to determine whether they can process the data object.
#' Any linked files should contain the data required, in the indicated format, to process the file data. One of:
#' "AAC", "AVI", "BMP", "ePub", "FLAC", "GIF", "JPEG", "MKV", "mobi", "MP3", "PCX", "PDF", "PNG", "TIFF", "WAV".
#' @param name_of_business Name of the business, corporation, or person that produced or commissioned the product.
#' @param name_of_product The name of the software product that produced this file.
#' @param name_of_repository The official name of the archive in which the stated source material is stored.
#' @param name_of_source_data The name of the electronic data source that was used to obtain the data in
#' this file. For example, the data may have been obtained from a CD-ROM disc that was named
#' "U.S. 1880 CENSUS CD-ROM vol. 13."
#' @param name_personal The full name formed in the manner the name is normally spoken.
#' The surname of an individual, if known, is enclosed between two slash (/) characters.
#' The order of the name parts should be the order that the person would, by custom of their culture,
#' have used when giving it to a recorder.
#' @param name_phonetic A character vector of phonetic variations of the full name.
#' @param name_piece_given Given name or earned name. Different given names are separated by a comma.
#' @param name_piece_nickname A descriptive or familiar name used in connection with one's proper name.
#' @param name_piece_prefix Non indexing name piece that appears preceding the given name and surname parts.
#' Different name prefix parts are separated by a comma.
#' @param name_piece_suffix Non-indexing name piece that appears after the given name and surname parts.
#' Different name suffix parts are separated by a comma.
#' @param name_piece_surname Surname or family name. Different surnames are separated by a comma.
#' @param name_piece_surname_prefix Surname prefix or article used in a family name. A surname prefix that
#' consists of multiple parts is written as is, and not modified in any way. Thus, the surname prefix for the
#' surname “de la Cruz” is “de la”.
#' @param name_romanised A character vector giving romanised variations of the name.
#' @param name_type Indicates the name type, for example the name issued or assumed as an immigrant.
#' @param national_or_tribal_origin The person's division of national origin or other folk, house, kindred,
#' lineage, or tribal interest.
#' @param nobility_type_title The title given to or used by a person, especially of royalty or other noble
#' class within a locality.
#' @param number_of_relationships The number of different relationships (family groups) that this person was
#' known to have been a member of as a partner, regardless of whether the associated relationships are present
#' in the GEDCOM file.
#' @param occupation The kind of activity that an individual does for a job, profession, or principal activity.
#' @param pedigree_linkage_type A code used to indicate the child to family relationship for pedigree navigation
#' purposes. One of "birth", "adopted", "foster".
#' @param phone_number A phone number.
#' @param phonetisation_method Indicates the method used in transforming the text to the phonetic variation.
#' @param physical_description An unstructured list of the attributes that describe the physical
#' characteristics of a person, place, or object. Commas separate each attribute. For example:
#' Hair Brown, Eyes Brown, Height 5 ft 8 in.
#' @param place_latitude The value specifying the latitudinal coordinate of the place name.
#' The latitude coordinate is the direction North or South from the equator in degrees and fraction of
#' degrees carried out to give the desired accuracy. For example: 18 degrees, 9 minutes, and 3.4 seconds North
#' would be formatted as N18.150944.
#' @param place_longitude The value specifying the longitudinal coordinate of the place name.
#' The longitude coordinate is Degrees and fraction of degrees east or west of the zero or base
#' meridian coordinate. For example: 168 degrees, 9 minutes, and 3.4 seconds East would be formatted as E168.150944.
#' @param place_name The jurisdictional name of the place where the event took place.
#' Jurisdictions are separated by commas. No part of the place name may be replaced by an abbreviation.
#' Place names are not terminated by a full stop or anything else.
#' @param place_phonetic A character vector of phonetic variations of the place name.
#' @param place_romanised A character vector of romanised variations of the place name.
#' @param possessions A list of possessions (real estate or other property) belonging to this individual.
#' @param product_version_number The version of the product that created the GEDCOM file.
#' It is defined and changed by the creators of the product.
#' @param publication_date A date_exact() object giving the date this source was published or created.
#' @param receiving_system_name The name of the system expected to process the GEDCOM file.
#' @param relation_is_descriptor A word or phrase that states object 1's relation is object 2.
#' @param religious_affiliation A name of the religion with which this person, event, or record was affiliated.
#' @param responsible_agency The organization, institution, corporation, person, or other entity that has
#' responsibility for the associated context. For example, an employer of a person of an associated occupation,
#' or a church that administered rites or events, or an organization responsible for creating and/or archiving
#' records.
#' @param role_descriptor A word or phrase that identifies a person's role in an event being described.
#' This should be the same word or phrase, and in the same language, that the recorder used to define
#' the role in the actual record.
#' @param role_in_event Indicates what role this person played in the event that is being cited in this context.
#' @param romanisation_method Indicates the method used in transforming the text to a romanised variation.
#' @param scholastic_achievement A description of a scholastic or educational achievement or pursuit.
#' @param sex_value A code that indicates the sex of the individual. Either "M" (male), "F" (female), "U" (undetermined),
#' "X" (intersex), or "N" (not recorded).
#' @param source_call_number An identification or reference description used to file and retrieve items
#' from the holdings of a repository.
#' @param source_descriptive_title The title of the work, record, or item and, when appropriate,
#' the title of the larger work or series of which it is a part.
#' @param source_filed_by_entry This entry is to provide a short title used for sorting, filing,
#' and retrieving source records.
#' @param source_jurisdiction_place The name of the lowest jurisdiction that encompasses all lower-level places
#' named in this source.
#' @param source_media_type A media classification code that indicates the type of material in which
#' the referenced source is stored. One of: "audio", "book", "card", "electronic", "fiche", "film",
#' "magazine", "manuscript", "map", "newspaper", "photo", "tombstone", "video".
#' @param source_originator The person, agency, or entity who created the record. For a published work,
#' this could be the author, compiler, transcriber, abstractor, or editor. For an unpublished source,
#' this may be an individual, a government agency, church organization, or private organization, etc.
#' @param source_publication_facts When and where the record was created. For published works,
#' this includes information such as the city of publication, name of the publisher, and year of publication.
#' @param submitter_name The name of the submitter formatted for display and address generation.
#' @param system_id A system identification name. This name must be unique for each system (product),
#' different from any other system. The name may include spaces, and is not restricted to ASCII characters.
#' @param text_from_source A verbatim copy of any description contained within the source.
#' This indicates notes or text that are actually contained in the source document, not the submitter's
#' opinion about the source.
#' @param time_value The time of a specific event.
#' @param file_creation_time The time at which the file was created.
#' @param user_reference_number A user-defined number or text that the submitter uses to identify this record.
#' @param user_reference_type A user-defined definition of the user_reference_number.
#' @param user_text Free-form user text. Comments, opinions.
#' @param where_within_source Specific location within the information referenced.
#' @param xref_fam An xref ID of a Family Group record.
#' @param xref_indi An xref ID of an Individual record.
#' @param xref_sour An xref ID of a Source record.
#' @param xref_repo An xref ID of a Repository record.
#' @param xref_obje An xref ID of a Multimedia record.
#' @param xref_note An xref ID of a Note record.
#' @param xref_subm An xref ID of a Submitter record.
#'
#' @param date_changed A CHANGE_DATE() object giving the time this record was last modified. If not provided,
#' the current date is used.
#' @param notes A list of NOTE_STRUCTURE() objects.
#' @param source_citations A list of SOURCE_CITATION() objects.
#' @param source_repository_citations A list of SOURCE_REPOSITORY_CITATION() objects.
#' @param multimedia_links A list of MULTIMEDIA_LINK() objects
NULL
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