{
    "$schema": "https://json-schema.org/draft/2020-12/schema",
    "$id": "https://screenjson.com/schema.json",
    "title": "ScreenJSON",
    "description": "A data serialisation format for screenplays.",
    "type": "object",
    "$defs": {
        "annotation": {
            "description": "A metadata item which describes an ancillary note made on an object.",
            "type": ["object", "null"],
            "properties": {
                "id": { "$ref": "#/$defs/id" },
                "parent" : { "$ref": "#/$defs/id" },
                "highlight": {
                    "description": "String character sequences to visually highlight (first/last chars).",
                    "type": "array",
                    "items": {
                        "type": "array",
                        "items": {
                            "type": "integer",
                            "minimum": 0
                        },
                        "minItems": 0,
                        "maxItems": 2,
                        "uniqueItems": true
                    }
                },
                "contributor": { "$ref": "#/$defs/id" },
                "created" : { "$ref": "#/$defs/isodate" },
                "content" : { "$ref": "#/$defs/content" },
                "color" : {
                    "description": "Label of a Color object specifying what colour to display.",
                    "type": "string",
                    "pattern": "/^[a-z0-9]+(?:-[a-z0-9]+)*$/",
                    "minLength": 3,
                    "maxLength": 15
                },
                "meta" : { "$ref": "#/$defs/meta" }
            },
            "required": ["id", "highlight", "created", "content"]
        },
        "author": {
            "description": "An original writer of the content.",
            "type": ["object", "null"],
            "properties": {
                "id": { "$ref": "#/$defs/id" },
                "given" : {
                    "description": "First/given name of the author.",
                    "type": "string",
                    "minLength": 2,
                    "maxLength": 20
                },
                "family": {
                    "description": "Last/family/surname name of the author.",
                    "type": "string",
                    "minLength": 2,
                    "maxLength": 20
                },
                "meta" : { "$ref": "#/$defs/meta" }
            },
            "required": ["id", "given", "family"]
        },
        "bookmark": {
            "description": " A shortcut child Element object within a Scene object.",
            "type": ["object", "null"],
            "properties": {
                "id": { "$ref": "#/$defs/id" },
                "parent" : { "$ref": "#/$defs/id" },
                "scene": {
                    "description": "Index of the Scene element.",
                    "type": "integer",
                    "minimum": 0
                },
                "type": {
                    "description": "The type property of the scene Element.",
                    "type": ["string", "null"],
                    "pattern": "/^[a-z0-9]+(?:-[a-z0-9]+)*$/",
                    "enum": ["action", "character", "dialogue", "general", "parenthetical", "shot", "transition"],
                    "minLength": 4,
                    "maxLength": 15
                },
                "element": {
                    "description": "Child Index of the Element object within the scene.",
                    "type": "integer",
                    "minimum": 0
                },
                "title": { "$ref": "#/$defs/content" },
                "description": { "$ref": "#/$defs/content" }
            },
            "required": ["id", "scene", "type", "element", "title"]
        },
        "charset": {
            "description": "Character set the content was created in (e.g. utf8). See: https://www.iana.org/assignments/character-sets/character-sets.xhtml",
            "type": ["string", "null"],
            "pattern": "^#([A-Fa-f0-9]{6}|[A-Fa-f0-9]{3})$",
            "minLength": 2,
            "maxLength": 10,
            "default": "utf8"
        },
        "color": {
            "description": "A human-understandable description of a color which the end-user’s presentation UI should use in its display in order to reproduce the same (e.g. HTML colour value).",
            "type": ["object", "null"],
            "properties": {
                "title" : {
                    "description": "A sluggable, human-understandable name for the color.",
                    "type": ["string", "null"],
                    "pattern": "/^[a-z0-9]+(?:-[a-z0-9]+)*$/"
                },
                "rgb" : {
                    "description": "RGB reference numbers of the color.",
                    "type": "array",
                    "items": {
                        "type": "integer",
                        "minimum": 0,
                        "maximum": 255
                    },
                    "minItems": 2,
                    "maxItems": 2
                },
                "hex" : {
                    "description": "Friendly HTML-reference code of the color.",
                    "type": ["string", "null"],
                    "pattern": "^#([A-Fa-f0-9]{6}|[A-Fa-f0-9]{3})$",
                    "minLength": 6,
                    "maxLength": 7
                },
                "meta" : { "$ref": "#/$defs/meta" }
            },
            "required": ["title", "rgb", "hex"]
        },
        "content": {
            "description": "A generic piece of translatable text keyed by its ISO language code.",
            "type": ["object", "null"],
            "properties": {
                "^.*$": {
                    "type": ["string", "null"],
                    "description": "Any arbitrary string of text.",
                    "minLength": 1,
                    "maxLength": 2000
                }
            },
            "required": []
        },
        "contributor": {
            "description": "Any third party who has contributed artistically to the content, such as an editor, director, or script doctor.",
            "type": ["object", "null"],
            "properties": {
                "id": { "$ref": "#/$defs/id" },
                "given" : {
                    "description": "First/given name of the contributor.",
                    "type": "string",
                    "minLength": 2,
                    "maxLength": 25
                },
                "family": {
                    "description": "Last/family/surname name of the contributor.",
                    "type": "string",
                    "minLength": 2,
                    "maxLength": 25
                },
                "roles": { "$ref": "#/$defs/roles" },
                "meta" : { "$ref": "#/$defs/meta" }
            },
            "required": ["id", "given", "family"]
        },
        "dir": {
            "description": "Language direction (ltr/rtl)",
            "type": ["string", "null"],
            "pattern": "^#([A-Fa-f0-9]{6}|[A-Fa-f0-9]{3})$",
            "minLength": 3,
            "maxLength": 3,
            "default": "ltr",
            "enum": ["ltr", "rtl"]
        },
        "encryption": {
            "description": "An Encryption object describing the cryto protocol.",
            "type": ["object", "null"],
            "properties": {
                "cipher": {
                    "description": "Cipher the content is encrypted with",
                    "type": ["string", "null"],
                    "pattern": "^#([A-Fa-f0-9]{6}|[A-Fa-f0-9]{3})$",
                    "default": "aes-256-ctr",
                    "minLength": 3,
                    "maxLength": 15,
                    "enum": ["CAST-cbc", "aes-128-cbc", "aes-128-cbc-hmac-sha1", "aes-128-cfb", "aes-128-cfb1", "aes-128-cfb8", "aes-128-ctr", "aes-128-ecb", "aes-128-gcm", "aes-128-ofb", "aes-128-xts", "aes-192-cbc", "aes-192-cfb", "aes-192-cfb1", "aes-192-cfb8", "aes-192-ctr", "aes-192-ecb", "aes-192-gcm", "aes-192-ofb", "aes-256-cbc", "aes-256-cbc-hmac-sha1", "aes-256-cfb", "aes-256-cfb1", "aes-256-cfb8", "aes-256-ctr", "aes-256-ecb", "aes-256-gcm", "aes-256-ofb", "aes-256-xts", "aes128", "aes192", "aes256", "bf", "bf-cbc", "bf-cfb", "bf-ecb", "bf-ofb", "blowfish", "camellia-128-cbc", "camellia-128-cfb", "camellia-128-cfb1", "camellia-128-cfb8", "camellia-128-ecb", "camellia-128-ofb", "camellia-192-cbc", "camellia-192-cfb", "camellia-192-cfb1", "camellia-192-cfb8", "camellia-192-ecb", "camellia-192-ofb", "camellia-256-cbc", "camellia-256-cfb", "camellia-256-cfb1", "camellia-256-cfb8", "camellia-256-ecb", "camellia-256-ofb", "camellia128", "camellia192", "camellia256", "cast", "cast-cbc", "cast5-cbc", "cast5-cfb", "cast5-ecb", "cast5-ofb", "des", "des-cbc", "des-cfb", "des-cfb1", "des-cfb8", "des-ecb", "des-ede", "des-ede-cbc", "des-ede-cfb", "des-ede-ofb", "des-ede3", "des-ede3-cbc", "des-ede3-cfb", "des-ede3-cfb1", "des-ede3-cfb8", "des-ede3-ofb", "des-ofb", "des3", "desx", "desx-cbc", "id-aes128-GCM", "id-aes192-GCM", "id-aes256-GCM", "idea", "idea-cbc", "idea-cfb", "idea-ecb", "idea-ofb", "rc2", "rc2-40-cbc", "rc2-64-cbc", "rc2-cbc", "rc2-cfb", "rc2-ecb", "rc2-ofb", "rc4", "rc4-40", "rc4-hmac-md5", "seed", "seed-cbc", "seed-cfb", "seed-ecb", "seed-ofb"]
                },
                "hash": {
                    "description": "Hash type the content is encrypted with.",
                    "type": ["string", "null"],
                    "pattern": "^#([A-Fa-f0-9]{6}|[A-Fa-f0-9]{3})$",
                    "default": "sha256",
                    "minLength": 2,
                    "maxLength": 15,
                    "enum": ["DSA", "DSA-SHA", "DSA-SHA1", "DSA-SHA1-old", "RSA-MD4", "RSA-MD5", "RSA-MDC2", "RSA-RIPEMD160", "RSA-SHA", "RSA-SHA1", "RSA-SHA1-2", "RSA-SHA224", "RSA-SHA256", "RSA-SHA384", "RSA-SHA512", "dsaEncryption", "dsaWithSHA", "dsaWithSHA1", "dss1", "ecdsa-with-SHA1", "md4", "md4WithRSAEncryption", "md5", "md5WithRSAEncryption", "mdc2", "mdc2WithRSA", "ripemd", "ripemd160", "ripemd160WithRSA", "rmd160", "sha", "sha1", "sha1WithRSAEncryption", "sha224", "sha224WithRSAEncryption", "sha256", "sha256WithRSAEncryption", "sha384", "sha384WithRSAEncryption", "sha512", "sha512WithRSAEncryption", "shaWithRSAEncryption", "ssl2-md5", "ssl3-md5", "ssl3-sha1", "whirlpool"]
                },
                "encoding": {
                    "Description": "Type of binary encoding used for the output.",
                    "pattern": "^#([A-Fa-f0-9]{6}|[A-Fa-f0-9]{3})$",
                    "type": "string",
                    "default": "hex",
                    "minLength": 3,
                    "maxLength": 7,
                    "enum": ["hex", "base16", "base32", "base64", "ascii85"]
                },
                "meta": { "$ref": "#/$defs/meta" }
            },
            "required": ["cipher", "hash", "encoding"]
        },
        "id": {
            "description": "A unique identifier for the entity or section.",
            "type": ["string", "null"],
            "format": "uuid",
            "minLength": 32,
            "maxLength": 32
        },
        "isodate": {
            "description": "ISO 8601 24hr timezone date. See: https://www.iso.org/iso-8601-date-and-time-format.html",
            "type": ["string", "null"],
            "format": "date-time",
            "minLength": 4,
            "maxLength": 23,
            "pattern": "^(\\d{4})-(\\d{2})-(\\d{2})T(\\d{2}):(\\d{2}):(\\d{2}(?:\\.\\d*)?)((-(\\d{2}):(\\d{2})|Z)?)$"
        },
        "lang": {
            "description": "ISO 639 country identifier for the main language of the  entity or section. See: https://www.iso.org/iso-639-language-code",
            "type": ["string", "null"],
            "default": "en",
            "minLength": 2,
            "maxLength": 2,
            "enum": ["ab", "aa", "af", "ak", "sq", "am", "ar", "an", "hy", "as", "av", "ae", "ay", "az", "bm", "ba", "eu", "be", "bn", "bh", "bi", "bs", "br", "bg", "my", "ca", "km", "ch", "ce", "ny", "zh", "cu", "cv", "kw", "co", "cr", "hr", "cs", "da", "dv", "nl", "dz", "en", "eo", "et", "ee", "fo", "fj", "fi", "fr", "ff", "gd", "gl", "lg", "ka", "de", "ki", "el", "kl", "gn", "gu", "ht", "ha", "he", "hz", "hi", "ho", "hu", "is", "io", "ig", "id", "ia", "ie", "iu", "ik", "ga", "it", "ja", "jv", "kn", "kr", "ks", "kk", "rw", "kv", "kg", "ko", "kj", "ku", "ky", "lo", "la", "lv", "lb", "li", "ln", "lt", "lu", "mk", "mg", "ms", "ml", "mt", "gv", "mi", "mr", "mh", "ro", "mn", "na", "nv", "nd", "ng", "ne", "se", "no", "nb", "nn", "ii", "oc", "oj", "or", "om", "os", "pi", "pa", "ps", "fa", "pl", "pt", "qu", "rm", "rn", "ru", "sm", "sg", "sa", "sc", "sr", "sn", "sd", "si", "sk", "sl", "so", "st", "nr", "es", "su", "sw", "ss", "sv", "tl", "ty", "tg", "ta", "tt", "te", "th", "bo", "ti", "to", "ts", "tn", "tr", "tk", "tw", "ug", "uk", "ur", "uz", "ve", "vi", "vo", "wa", "cy", "fy", "wo", "xh", "yi", "yo", "za", "zu"]
        },
        "locale": {
            "description": "ISO identifier for the environment used to create the entity or section (en-GB). See: https://www.w3.org/International/articles/language-tags/",
            "type": ["string", "null"],
            "pattern": "^#([A-Fa-f0-9]{6}|[A-Fa-f0-9]{3})$",
            "default": "en-US",
            "minLength": 5,
            "maxLength": 5,
            "enum": ["af-ZA", "am-ET", "ar-AE", "ar-BH", "ar-DZ", "ar-EG", "ar-IQ", "ar-JO", "ar-KW", "ar-LB", "ar-LY", "ar-MA", "arn-CL", "ar-OM", "ar-QA", "ar-SA", "ar-SD", "ar-SY", "ar-TN", "ar-YE", "as-IN", "az-az", "az-Cyrl-AZ", "az-Latn-AZ", "ba-RU", "be-BY", "bg-BG", "bn-BD", "bn-IN", "bo-CN", "br-FR", "bs-Cyrl-BA", "bs-Latn-BA", "ca-ES", "co-FR", "cs-CZ", "cy-GB", "da-DK", "de-AT", "de-CH", "de-DE", "de-LI", "de-LU", "dsb-DE", "dv-MV", "el-CY", "el-GR", "en-029", "en-AU", "en-BZ", "en-CA", "en-cb", "en-GB", "en-IE", "en-IN", "en-JM", "en-MT", "en-MY", "en-NZ", "en-PH", "en-SG", "en-TT", "en-US", "en-ZA", "en-ZW", "es-AR", "es-BO", "es-CL", "es-CO", "es-CR", "es-DO", "es-EC", "es-ES", "es-GT", "es-HN", "es-MX", "es-NI", "es-PA", "es-PE", "es-PR", "es-PY", "es-SV", "es-US", "es-UY", "es-VE", "et-EE", "eu-ES", "fa-IR", "fi-FI", "fil-PH", "fo-FO", "fr-BE", "fr-CA", "fr-CH", "fr-FR", "fr-LU", "fr-MC", "fy-NL", "ga-IE", "gd-GB", "gd-ie", "gl-ES", "gsw-FR", "gu-IN", "ha-Latn-NG", "he-IL", "hi-IN", "hr-BA", "hr-HR", "hsb-DE", "hu-HU", "hy-AM", "id-ID", "ig-NG", "ii-CN", "in-ID", "is-IS", "it-CH", "it-IT", "iu-Cans-CA", "iu-Latn-CA", "iw-IL", "ja-JP", "ka-GE", "kk-KZ", "kl-GL", "km-KH", "kn-IN", "kok-IN", "ko-KR", "ky-KG", "lb-LU", "lo-LA", "lt-LT", "lv-LV", "mi-NZ", "mk-MK", "ml-IN", "mn-MN", "mn-Mong-CN", "moh-CA", "mr-IN", "ms-BN", "ms-MY", "mt-MT", "nb-NO", "ne-NP", "nl-BE", "nl-NL", "nn-NO", "no-no", "nso-ZA", "oc-FR", "or-IN", "pa-IN", "pl-PL", "prs-AF", "ps-AF", "pt-BR", "pt-PT", "qut-GT", "quz-BO", "quz-EC", "quz-PE", "rm-CH", "ro-mo", "ro-RO", "ru-mo", "ru-RU", "rw-RW", "sah-RU", "sa-IN", "se-FI", "se-NO", "se-SE", "si-LK", "sk-SK", "sl-SI", "sma-NO", "sma-SE", "smj-NO", "smj-SE", "smn-FI", "sms-FI", "sq-AL", "sr-BA", "sr-CS", "sr-Cyrl-BA", "sr-Cyrl-CS", "sr-Cyrl-ME", "sr-Cyrl-RS", "sr-Latn-BA", "sr-Latn-CS", "sr-Latn-ME", "sr-Latn-RS", "sr-ME", "sr-RS", "sr-sp", "sv-FI", "sv-SE", "sw-KE", "syr-SY", "ta-IN", "te-IN", "tg-Cyrl-TJ", "th-TH", "tk-TM", "tlh-QS", "tn-ZA", "tr-TR", "tt-RU", "tzm-Latn-DZ", "ug-CN", "uk-UA", "ur-PK", "uz-Cyrl-UZ", "uz-Latn-UZ", "uz-uz", "vi-VN", "wo-SN", "xh-ZA", "yo-NG", "zh-CN", "zh-HK", "zh-MO", "zh-SG", "zh-TW", "zu-ZA"]
        },
        "meta": {
            "description": "",
            "type": ["object", "null"],
            "properties": {
                "^.*$": {
                    "type": ["string", "null"],
                    "description": "Key-value pair.",
                    "minLength": 2,
                    "maxLength": 255
                }
            },
            "required": []
        },
        "registration": {
            "description": "",
            "type": ["object", "null"],
            "properties": {
                "authority": {
                    "description": "Sluggable label of registration provider/host.",
                    "type": "string",
                    "pattern": "/^[a-z0-9]+(?:-[a-z0-9]+)*$/",
                    "minLength": 3,
                    "maxLength": 50,
                    "examples": ["WGA-W", "WGA-E"]
                },
                "identifier": {
                    "description": "Sluggable label of registration ID.",
                    "type": "string",
                    "pattern": "/^[a-z0-9]+(?:-[a-z0-9]+)*$/",
                    "minLength": 3,
                    "maxLength": 50
                },
                "created" : { "$ref": "#/$defs/isodate" },
                "modified" : { "$ref": "#/$defs/isodate" },
                "meta" : { "$ref": "#/$defs/meta" }
            }
        },
        "revision": {
            "description": "When a parent container or sub-section of content was changed.",
            "type": ["object", "null"],
            "properties": {
                "id": { "$ref": "#/$defs/id" },
                "parent" : { "$ref": "#/$defs/id" },
                "index": {
                    "description": "Internal index of the revision.",
                    "type": "integer",
                    "minimum": 0
                },
                "authors" : {
                    "description": "List of author IDs who created the revision.",
                    "type": "array",
                    "items": { "$ref": "#/$defs/id" }
                },
                "version": {
                    "description": "A slugganle, human-readable type of revision.",
                    "type": ["string", "null"],
                    "minLength": 3,
                    "maxLength": 15,
                    "pattern": "/^[a-z0-9]+(?:-[a-z0-9]+)*$/",
                    "examples": ["draft", "blue", "third", "final"]
                },
                "created" : { "$ref": "#/$defs/isodate" },
                "meta" : { "$ref": "#/$defs/meta" }
            },
            "required": ["id", "index", "authors", "version", "created"]
        },
        "roles": {
            "description": "Sluggable list of system roles/groups a resource belongs to and should be accessible by.",
            "type": "array",
            "items": {
                "type": ["string", "null"],
                "pattern": "^#([A-Fa-f0-9]{6}|[A-Fa-f0-9]{3})$",
                "minLength": 3,
                "maxLength": 15
            },
            "uniqueItems": true
        },
        "style": {
            "description": "A reusable visual rule a GUI should apply to the content of one or more scene elements throughout the entire document.",
            "type": ["object", "null"],
            "properties": {
                "id" : {
                    "description": "Unique sluggable identifier for referencing within the document.",
                    "type": ["string", "null"],
                    "pattern": "/^[a-z0-9]+(?:-[a-z0-9]+)*$/",
                    "examples": ["courier-12", "courier-14", "courier-16", "arial-10"],
                    "minLength": 3,
                    "maxLength": 25
                },
                "default": {
                    "description": "Whether or not the style should be the default presentation.",
                    "type": "boolean"
                },
                "content" : {
                    "description": "Arbitrary text with instructions for the presentation rule.",
                    "type": "string",
                    "minLength": 0,
                    "maxLength": 1000
                },
                "meta" : { "$ref": "#/$defs/meta" }
            },
            "required": ["id", "default", "content"]
        },
        "template": {
            "description": "",
            "type": ["object", "null"],
            "properties": {
                "id" : {
                    "description": "Unique sluggable identifier for referencing within the document.",
                    "type": ["string", "null"],
                    "pattern": "/^[a-z0-9]+(?:-[a-z0-9]+)*$/",
                    "minLength": 3,
                    "maxLength": 25,
                    "examples": ["courier-12", "courier-14", "courier-16", "arial-10"]
                },
                "default": {
                    "description": "Whether or not the style should be the default.",
                    "type": "boolean"
                },
                "content" : {
                    "description": "Arbitrary text with instructions for the template rule.",
                    "type": "string",
                    "minLength": 0,
                    "maxLength": 1000
                },
                "meta" : { "$ref": "#/$defs/meta" }
            },
            "required": ["id", "default", "content"]
        },
        "title": {
            "description": "Name of the section, specified by it's language code.",
            "type": ["object", "null"],
            "properties": {
                "^.*$": {
                    "type": ["string", "null"],
                    "description": "Name or title of the identified part.",
                    "minLength": 2,
                    "maxLength": 255
                }
            }
        },
        "uuidarray": {
            "description": "A list of UUID-formatted IDs defined in the document describing unique objects.",
            "type": "array",
            "items": { "$ref": "#/$defs/id" }
        }
    },  
    "properties": {

        "id": { "$ref": "#/$defs/id" },
        "guid": {
            "description": "The ISO format of identifiers used in the document (rfc4122, https://datatracker.ietf.org/doc/html/rfc4122).",
            "type": ["string", "null"],
            "pattern": "^#([A-Fa-f0-9]{6}|[A-Fa-f0-9]{3})$",
            "minLength": 2,
            "maxLength": 10,
            "default": "rfc4122"
        },
        "title": { "$ref": "#/$defs/title" },
        "lang": { "$ref": "#/$defs/lang" },
        "locale":  { "$ref": "#/$defs/locale" },
        "charset": { "$ref": "#/$defs/charset" },
        "dir": { "$ref": "#/$defs/dir" },
        "authors": {
            "description": "One or more Author objects.",
            "type": "array",
            "items": { "$ref": "#/$defs/author" }
        },
        "colors": {
            "description": "One or more Color objects (for all content).",
            "type": "array",
            "items": { "$ref": "#/$defs/color" }
        },
        "contributors": {
            "description": "One or more Contributor objects.",
            "type": "array",
            "items": { "$ref": "#/$defs/contributor" }
        },
        "derivations": {
            "description": "One or more Derivation objects.",
            "type": "array",
            "items": {
                "type": ["object", "null"],
                "description": "An original artistic work used as a source for the content (based on).",
                "properties": {
                    "id" : { "$ref": "#/$defs/id" },
                    "type": {
                        "description": "A sluggable, human-understandable name for the work's type genre/group.",
                        "type": ["string", "null"],
                        "pattern": "/^[a-z0-9]+(?:-[a-z0-9]+)*$/",
                        "minLength": 3,
                        "maxLength": 30,
                        "examples": ["novel", "novella", "teleplay"]
                    },
                    "title": { "$ref": "#/$defs/content" },
                    "meta" : { "$ref": "#/$defs/meta" }
                },
                "required": ["id", "type", "title"]
            }
        },
        "document": {
            "description": "A Document object with the content of the screenplay.",
            "type": "object",
            "properties": {
                "bookmarks": {
                    "description": "One or more Bookmark objects.",
                    "type": "array",
                    "items": { "$ref": "#/$defs/bookmark" }
                },
                "cover": {
                    "description": "How the front page of the screenplay should be presented.",
                    "type": "object",
                    "properties": {
                        "title" : { "$ref": "#/$defs/title" },
                        "authors" : { "$ref": "#/$defs/uuidarray" },
                        "derivations" : { "$ref": "#/$defs/uuidarray" },
                        "additional" : { "$ref": "#/$defs/content" },
                        "meta" : { "$ref": "#/$defs/meta" }
                    },
                    "required": ["title", "authors"]
                },
                "header": {
                    "description": "How the footer bar/ribbon of the screenplay should be presented.",
                    "type": "object",
                    "properties": {
                        "cover" : {
                            "description": "Whether or not to show the header on the cover page.",
                            "type": "boolean",
                            "default": false
                        },
                        "display" : {
                            "description": "Whether or not to display the header at all.",
                            "type": "boolean",
                            "default": false
                        },
                        "start": {
                            "description": "A page or scene index where a header should start to be shown.",
                            "type": "integer",
                            "minimum": 0
                        },
                        "omit" : {
                            "description": "A list of scenes or page indexes where a header should not be shown.",
                            "type": "array",
                            "items": {
                                "type": "integer",
                                "minimum": 0
                            },
                            "uniqueItems": true
                        },
                        "content" : { "$ref": "#/$defs/content" },
                        "meta" : { "$ref": "#/$defs/meta" }
                    },
                    "required": ["cover", "display", "start", "omit", "content"]
                },
                "footer": {
                    "description": "How the footer bar/ribbon of the screenplay should be presented.",
                    "type": "object",
                    "properties": {
                        "cover" : {
                            "description": "Whether or not to show the footer on the cover page.",
                            "type": "boolean",
                            "default": false
                        },
                        "display" : {
                            "description": "Whether or not to display the footer at all.",
                            "type": "boolean",
                            "default": false
                        },
                        "start": {
                            "description": "A page or scene index where a footer should start to be shown.",
                            "type": "integer",
                            "minimum": 0
                        },
                        "omit" : {
                            "description": "A list of scenes or page indexes where a footer should not be shown.",
                            "type": "array",
                            "items": {
                                "type": "integer",
                                "minimum": 0
                            },
                            "uniqueItems": true
                        },
                        "content" : { "$ref": "#/$defs/content" },
                        "meta" : { "$ref": "#/$defs/meta" }
                    },
                    "required": ["cover", "display", "start", "omit", "content"]
                },
                "status": {
                    "description": "A script revision color.",
                    "type": "object",
                    "properties": {
                        "color": {
                            "description": "Color code of the revision",
                            "type": "string",
                            "minLength": 4,
                            "maxLength": 10,
                            "enum": ["white", "blue", "pink", "yellow", "green", "goldenrod", "buff", "salmon", "cherry"]
                        },
                        "round" : {
                            "description": "Which round of revisions the work is on.",
                            "type": "integer",
                            "minimum": 1,
                            "default": 1
                        },
                        "updated" : { "$ref": "#/$defs/isodate" },
                        "meta" : { "$ref": "#/$defs/meta" }
                    },
                    "required": ["color", "round", "updated"]
                },
                "scenes": {
                    "description": "A collection of one or more Scene objects.",
                    "type": "array",
                    "items": {
                        "type": "object",
                        "properties": {
                            "id" : { "$ref": "#/$defs/id" },
                            "parent" : { "$ref": "#/$defs/id" },
                            "authors" : { "$ref": "#/$defs/uuidarray" },
                            "contributors" : { "$ref": "#/$defs/uuidarray" },
                            "heading": {
                                "description": "A Heading describes the setting and context of a scene.",
                                "type": "object",
                                "properties": {
                                    "numbering" : {
                                        "description": "Production scene number to display.",
                                        "type": "integer",
                                        "minimum": 1
                                    },
                                    "page" : {
                                        "description": "Page number the scene should appear on.",
                                        "type": "integer",
                                        "minimum": 1
                                    },
                                    "context": {
                                        "description" : "A Content object specifying INT/EXT/POV etc.",
                                        "type": "object",
                                        "properties": {
                                            "^.*$": {
                                                "type": ["string", "null"],
                                                "minLength": 3,
                                                "maxLength": 10,
                                                "enum": ["I/E", "INT/EXT", "EXT/INT", "INT", "EXT", "POV"]
                                            }
                                        }
                                    },
                                    "setting": {
                                        "description" : "A Content object specifying the location of the scene.",
                                        "type": "object",
                                        "properties": {
                                            "^.*$": {
                                                "type": "string"
                                            }
                                        }
                                    },
                                    "sequence": {
                                        "description" : "A Content object specifying DAY/NIGHT etc.",
                                        "type": "object",
                                        "properties": {
                                            "^.*$": {
                                                "type": ["string", "null"],
                                                "minLength": 3,
                                                "maxLength": 15,
                                                "enum": ["DAY", "NIGHT", "DAWN", "DUSK", "LATER", "MOMENTS LATER", "CONTINUOUS", "MORNING", "AFTERNOON", "EVENING", "THE NEXT DAY"]
                                            }
                                        }
                                    },
                                    "description" : { "$ref": "#/$defs/content" },
                                    "meta": { "$ref": "#/$defs/uuidarray" }
                                },
                                "required": ["context", "setting", "sequence"]
                            },
                            "body": {
                                "description": "An array of Element objects specifying the scene content.",
                                "type": "array",
                                "items": {
                                    "description": "An Element is a piece of a scene such as dialogue or action, and analogous to a paragraph in an editing program. It contains the content of the work.",
                                    "type": "object",
                                    "properties": {
                                        "id": { "$ref": "#/$defs/id" },
                                        "type": {
                                            "description": "The type of element: action, character, dialogue, parenthetical etc.",
                                            "type": "string",
                                            "enum": ["action", "character", "dialogue", "general", "parenthetical", "shot", "transition"]
                                        },
                                        "parent" : { "$ref": "#/$defs/id" },
                                        "scene" : { "$ref": "#/$defs/id" },
                                        "access" : { "$ref": "#/$defs/roles" },
                                        "annotations" : {
                                            "description": "One or more Annotation objects.",
                                            "type": "array",
                                            "items": { "$ref": "#/$defs/annotation" }
                                        },
                                        "authors" : { "$ref": "#/$defs/uuidarray" },
                                        "contributors" : { "$ref": "#/$defs/uuidarray" },
                                        "charset" : { "$ref": "#/$defs/charset" },
                                        "class": {
                                            "description": "A visual presentation class to apply to the content.",
                                            "type": "string"
                                        },
                                        "content" : { "$ref": "#/$defs/content" },
                                        "dir" : { "$ref": "#/$defs/dir" },
                                        "dom": {
                                            "description": "A comparative reference to a parallel XML/HTML tag/element.",
                                            "type": "string"
                                        },
                                        "dual": {
                                            "description": "Whether or not the element contains dual dialogue.",
                                            "type": "boolean",
                                            "default": false
                                        },
                                        "encryption" : { "$ref": "#/$defs/encryption" },
                                        "fov" : {
                                            "description": "The inferred field of view of the camera (e.g. 360 degrees)",
                                            "type": "number",
                                            "minimum": 0,
                                            "maximum": 360,
                                            "default": 40
                                        },
                                        "interactivity" : {
                                            "description": "Whether or not the element contains interactive elements or triggers.",
                                            "type": "boolean",
                                            "default": false
                                        },
                                        "locked": {
                                            "description": "Whether or not the element is locked for editing/revision.",
                                            "type": "boolean",
                                            "default": false
                                        },
                                        "meta" : { "$ref": "#/$defs/meta" },
                                        "omitted": {
                                            "description": "Whether or not the element should be omitted from display.",
                                            "type": "boolean",
                                            "default": false
                                        },
                                        "origin": {
                                            "description": "Where the dialogue originates: V.O, O.S, O.C, FILTER.",
                                            "type": "string",
                                            "enum": ["V.O", "O.S", "O.C", "FILTER"]
                                        },
                                        "perspective" : {
                                            "description": "The inferred visual perspective of the element(e.g. 2D/3D)",
                                            "type": "string",
                                            "enum": ["2D", "3D"]
                                        },
                                        "revisions" : {
                                            "description": "One or more Revisions objects.",
                                            "type": "array",
                                            "items": { "$ref": "#/$defs/revision" }
                                        },
                                        "styles" : {
                                            "description": "A sluggable list of style identifiers for displaying the content.",
                                            "type": "array",
                                            "items": {
                                                "type": "string",
                                                "pattern": "/^[a-z0-9]+(?:-[a-z0-9]+)*$/"
                                            },
                                            "uniqueItems": true
                                        }
                                    },
                                    "required": ["id", "type", "authors", "content"]
                                }
                            },
                            "animals": {
                                "description": "Sluggable list of animals present in the scene.",
                                "type": "array",
                                "items": {
                                    "type": "string",
                                    "pattern": "/^[a-z0-9]+(?:-[a-z0-9]+)*$/"
                                },
                                "uniqueItems": true
                            },
                            "cast": {
                                "description": "Sluggable list of characters present in the scene.",
                                "type": "array",
                                "items": {
                                    "type": "string",
                                    "pattern": "/^[a-z0-9]+(?:-[a-z0-9]+)*$/"
                                },
                                "uniqueItems": true
                            },
                            "extra": {
                                "description": "Sluggable list of additional/miscellaneous items present in the scene.",
                                "type": "array",
                                "items": {
                                    "type": "string",
                                    "pattern": "/^[a-z0-9]+(?:-[a-z0-9]+)*$/"
                                },
                                "uniqueItems": true
                            },
                            "locations": {
                                "description": "Sluggable list of locations present in the scene.",
                                "type": "array",
                                "items": {
                                    "type": "string",
                                    "pattern": "/^[a-z0-9]+(?:-[a-z0-9]+)*$/"
                                },
                                "uniqueItems": true
                            },
                            "moods" : {
                                "description": "Sluggable list of subjective mood keywords describing the scene.",
                                "type": "array",
                                "items": {
                                    "type": "string",
                                    "pattern": "/^[a-z0-9]+(?:-[a-z0-9]+)*$/"
                                },
                                "uniqueItems": true
                            },
                            "props": {
                                "description": "Sluggable list of props present in the scene.",
                                "type": "array",
                                "items": {
                                    "type": "string",
                                    "pattern": "/^[a-z0-9]+(?:-[a-z0-9]+)*$/"
                                },
                                "uniqueItems": true
                            },
                            "sfx": {
                                "description": "Sluggable list of special FX present in the scene.",
                                "type": "array",
                                "items": {
                                    "type": "string",
                                    "pattern": "/^[a-z0-9]+(?:-[a-z0-9]+)*$/"
                                },
                                "uniqueItems": true
                            },
                            "sounds": {
                                "description": "Sluggable list of sounds, music, and audio present in the scene.",
                                "type": "array",
                                "items": {
                                    "type": "string",
                                    "pattern": "/^[a-z0-9]+(?:-[a-z0-9]+)*$/"
                                },
                                "uniqueItems": true
                            },
                            "tags": {
                                "description": "Sluggable list of all related keywords attached to the scene.",
                                "type": "array",
                                "items": {
                                    "type": "string",
                                    "pattern": "/^[a-z0-9]+(?:-[a-z0-9]+)*$/"
                                },
                                "uniqueItems": true
                            },
                            "vfx": {
                                "description": "Sluggable list of visual FX present in the scene.",
                                "type": "array",
                                "items": {
                                    "type": "string",
                                    "pattern": "/^[a-z0-9]+(?:-[a-z0-9]+)*$/"
                                },
                                "uniqueItems": true
                            },
                            "wardrobe" : {
                                "description": "Sluggable list of wardrobe items present in the scene.",
                                "type": "array",
                                "items": {
                                    "type": "string",
                                    "pattern": "/^[a-z0-9]+(?:-[a-z0-9]+)*$/"
                                },
                                "uniqueItems": true
                            }
                        },
                        "required": ["id", "authors", "contributors", "heading", "body"]
                    }
                },
                "styles": {
                    "description": "One or more Style objects.",
                    "type": "array",
                    "items": { "$ref": "#/$defs/style" }
                },
                "templates": {
                    "description": "One or more Template objects.",
                    "type": "array",
                    "items": { "$ref": "#/$defs/template" }
                },
                "meta": { "$ref": "#/$defs/meta" }
            },
            "required": ["bookmarks", "cover", "header", "footer", "status", "scenes", "styles"]
        },
        "encryption": { "$ref": "#/$defs/encryption" },
        "license": {
            "description": "A License object specifying the copyright.",
            "type": ["object", "null"],
            "properties": {
                "identifier": {
                    "description": "Sluggable label of the copyright schema. E.g. https://spdx.org/licenses/",
                    "type": "string",
                    "enum": ["0BSD", "AAL", "Abstyles", "AdaCore-doc", "Adobe-2006", "Adobe-Display-PostScript", "Adobe-Glyph", "Adobe-Utopia", "ADSL", "AFL-1.1", "AFL-1.2", "AFL-2.0", "AFL-2.1", "AFL-3.0", "Afmparse", "AGPL-1.0-only", "AGPL-1.0-or-later", "AGPL-3.0-only", "AGPL-3.0-or-later", "Aladdin", "AMDPLPA", "AML", "AML-glslang", "AMPAS", "ANTLR-PD", "ANTLR-PD-fallback", "Apache-1.0", "Apache-1.1", "Apache-2.0", "APAFML", "APL-1.0", "App-s2p", "APSL-1.0", "APSL-1.1", "APSL-1.2", "APSL-2.0", "Arphic-1999", "Artistic-1.0", "Artistic-1.0-cl8", "Artistic-1.0-Perl", "Artistic-2.0", "ASWF-Digital-Assets-1.0", "ASWF-Digital-Assets-1.1", "Baekmuk", "Bahyph", "Barr", "bcrypt-Solar-Designer", "Beerware", "Bitstream-Charter", "Bitstream-Vera", "BitTorrent-1.0", "BitTorrent-1.1", "blessing", "BlueOak-1.0.0", "Boehm-GC", "Borceux", "Brian-Gladman-2-Clause", "Brian-Gladman-3-Clause", "BSD-1-Clause", "BSD-2-Clause", "BSD-2-Clause-Darwin", "BSD-2-Clause-Patent", "BSD-2-Clause-Views", "BSD-3-Clause", "BSD-3-Clause-acpica", "BSD-3-Clause-Attribution", "BSD-3-Clause-Clear", "BSD-3-Clause-flex", "BSD-3-Clause-HP", "BSD-3-Clause-LBNL", "BSD-3-Clause-Modification", "BSD-3-Clause-No-Military-License", "BSD-3-Clause-No-Nuclear-License", "BSD-3-Clause-No-Nuclear-License-2014", "BSD-3-Clause-No-Nuclear-Warranty", "BSD-3-Clause-Open-MPI", "BSD-3-Clause-Sun", "BSD-4-Clause", "BSD-4-Clause-Shortened", "BSD-4-Clause-UC", "BSD-4.3RENO", "BSD-4.3TAHOE", "BSD-Advertising-Acknowledgement", "BSD-Attribution-HPND-disclaimer", "BSD-Inferno-Nettverk", "BSD-Protection", "BSD-Source-beginning-file", "BSD-Source-Code", "BSD-Systemics", "BSD-Systemics-W3Works", "BSL-1.0", "BUSL-1.1", "bzip2-1.0.6", "C-UDA-1.0", "CAL-1.0", "CAL-1.0-Combined-Work-Exception", "Caldera", "Caldera-no-preamble", "CATOSL-1.1", "CC-BY-1.0", "CC-BY-2.0", "CC-BY-2.5", "CC-BY-2.5-AU", "CC-BY-3.0", "CC-BY-3.0-AT", "CC-BY-3.0-AU", "CC-BY-3.0-DE", "CC-BY-3.0-IGO", "CC-BY-3.0-NL", "CC-BY-3.0-US", "CC-BY-4.0", "CC-BY-NC-1.0", "CC-BY-NC-2.0", "CC-BY-NC-2.5", "CC-BY-NC-3.0", "CC-BY-NC-3.0-DE", "CC-BY-NC-4.0", "CC-BY-NC-ND-1.0", "CC-BY-NC-ND-2.0", "CC-BY-NC-ND-2.5", "CC-BY-NC-ND-3.0", "CC-BY-NC-ND-3.0-DE", "CC-BY-NC-ND-3.0-IGO", "CC-BY-NC-ND-4.0", "CC-BY-NC-SA-1.0", "CC-BY-NC-SA-2.0", "CC-BY-NC-SA-2.0-DE", "CC-BY-NC-SA-2.0-FR", "CC-BY-NC-SA-2.0-UK", "CC-BY-NC-SA-2.5", "CC-BY-NC-SA-3.0", "CC-BY-NC-SA-3.0-DE", "CC-BY-NC-SA-3.0-IGO", "CC-BY-NC-SA-4.0", "CC-BY-ND-1.0", "CC-BY-ND-2.0", "CC-BY-ND-2.5", "CC-BY-ND-3.0", "CC-BY-ND-3.0-DE", "CC-BY-ND-4.0", "CC-BY-SA-1.0", "CC-BY-SA-2.0", "CC-BY-SA-2.0-UK", "CC-BY-SA-2.1-JP", "CC-BY-SA-2.5", "CC-BY-SA-3.0", "CC-BY-SA-3.0-AT", "CC-BY-SA-3.0-DE", "CC-BY-SA-3.0-IGO", "CC-BY-SA-4.0", "CC-PDDC", "CC0-1.0", "CDDL-1.0", "CDDL-1.1", "CDL-1.0", "CDLA-Permissive-1.0", "CDLA-Permissive-2.0", "CDLA-Sharing-1.0", "CECILL-1.0", "CECILL-1.1", "CECILL-2.0", "CECILL-2.1", "CECILL-B", "CECILL-C", "CERN-OHL-1.1", "CERN-OHL-1.2", "CERN-OHL-P-2.0", "CERN-OHL-S-2.0", "CERN-OHL-W-2.0", "CFITSIO", "check-cvs", "checkmk", "ClArtistic", "Clips", "CMU-Mach", "CMU-Mach-nodoc", "CNRI-Jython", "CNRI-Python", "CNRI-Python-GPL-Compatible", "COIL-1.0", "Community-Spec-1.0", "Condor-1.1", "copyleft-next-0.3.0", "copyleft-next-0.3.1", "Cornell-Lossless-JPEG", "CPAL-1.0", "CPL-1.0", "CPOL-1.02", "Cronyx", "Crossword", "CrystalStacker", "CUA-OPL-1.0", "Cube", "curl", "D-FSL-1.0", "DEC-3-Clause", "diffmark", "DL-DE-BY-2.0", "DL-DE-ZERO-2.0", "DOC", "Dotseqn", "DRL-1.0", "DRL-1.1", "DSDP", "dtoa", "dvipdfm", "ECL-1.0", "ECL-2.0", "EFL-1.0", "EFL-2.0", "eGenix", "Elastic-2.0", "Entessa", "EPICS", "EPL-1.0", "EPL-2.0", "ErlPL-1.1", "etalab-2.0", "EUDatagrid", "EUPL-1.0", "EUPL-1.1", "EUPL-1.2", "Eurosym", "Fair", "FBM", "FDK-AAC", "Ferguson-Twofish", "Frameworx-1.0", "FreeBSD-DOC", "FreeImage", "FSFAP", "FSFAP-no-warranty-disclaimer", "FSFUL", "FSFULLR", "FSFULLRWD", "FTL", "Furuseth", "fwlw", "GCR-docs", "GD", "GFDL-1.1-invariants-only", "GFDL-1.1-invariants-or-later", "GFDL-1.1-no-invariants-only", "GFDL-1.1-no-invariants-or-later", "GFDL-1.1-only", "GFDL-1.1-or-later", "GFDL-1.2-invariants-only", "GFDL-1.2-invariants-or-later", "GFDL-1.2-no-invariants-only", "GFDL-1.2-no-invariants-or-later", "GFDL-1.2-only", "GFDL-1.2-or-later", "GFDL-1.3-invariants-only", "GFDL-1.3-invariants-or-later", "GFDL-1.3-no-invariants-only", "GFDL-1.3-no-invariants-or-later", "GFDL-1.3-only", "GFDL-1.3-or-later", "Giftware", "GL2PS", "Glide", "Glulxe", "GLWTPL", "gnuplot", "GPL-1.0-only", "GPL-1.0-or-later", "GPL-2.0-only", "GPL-2.0-or-later", "GPL-3.0-only", "GPL-3.0-or-later", "Graphics-Gems", "gSOAP-1.3b", "gtkbook", "HaskellReport", "hdparm", "Hippocratic-2.1", "HP-1986", "HP-1989", "HPND", "HPND-DEC", "HPND-doc", "HPND-doc-sell", "HPND-export-US", "HPND-export-US-modify", "HPND-Fenneberg-Livingston", "HPND-INRIA-IMAG", "HPND-Kevlin-Henney", "HPND-Markus-Kuhn", "HPND-MIT-disclaimer", "HPND-Pbmplus", "HPND-sell-MIT-disclaimer-xserver", "HPND-sell-regexpr", "HPND-sell-variant", "HPND-sell-variant-MIT-disclaimer", "HPND-UC", "HTMLTIDY", "IBM-pibs", "ICU", "IEC-Code-Components-EULA", "IJG", "IJG-short", "ImageMagick", "iMatix", "Imlib2", "Info-ZIP", "Inner-Net-2.0", "Intel", "Intel-ACPI", "Interbase-1.0", "IPA", "IPL-1.0", "ISC", "ISC-Veillard", "Jam", "JasPer-2.0", "JPL-image", "JPNIC", "JSON", "Kastrup", "Kazlib", "Knuth-CTAN", "LAL-1.2", "LAL-1.3", "Latex2e", "Latex2e-translated-notice", "Leptonica", "LGPL-2.0-only", "LGPL-2.0-or-later", "LGPL-2.1-only", "LGPL-2.1-or-later", "LGPL-3.0-only", "LGPL-3.0-or-later", "LGPLLR", "Libpng", "libpng-2.0", "libselinux-1.0", "libtiff", "libutil-David-Nugent", "LiLiQ-P-1.1", "LiLiQ-R-1.1", "LiLiQ-Rplus-1.1", "Linux-man-pages-1-para", "Linux-man-pages-copyleft", "Linux-man-pages-copyleft-2-para", "Linux-man-pages-copyleft-var", "Linux-OpenIB", "LOOP", "LPD-document", "LPL-1.0", "LPL-1.02", "LPPL-1.0", "LPPL-1.1", "LPPL-1.2", "LPPL-1.3a", "LPPL-1.3c", "lsof", "Lucida-Bitmap-Fonts", "LZMA-SDK-9.11-to-9.20", "LZMA-SDK-9.22", "Mackerras-3-Clause", "Mackerras-3-Clause-acknowledgment", "magaz", "mailprio", "MakeIndex", "Martin-Birgmeier", "McPhee-slideshow", "metamail", "Minpack", "MirOS", "MIT", "MIT-0", "MIT-advertising", "MIT-CMU", "MIT-enna", "MIT-feh", "MIT-Festival", "MIT-Modern-Variant", "MIT-open-group", "MIT-testregex", "MIT-Wu", "MITNFA", "MMIXware", "Motosoto", "MPEG-SSG", "mpi-permissive", "mpich2", "MPL-1.0", "MPL-1.1", "MPL-2.0", "MPL-2.0-no-copyleft-exception", "mplus", "MS-LPL", "MS-PL", "MS-RL", "MTLL", "MulanPSL-1.0", "MulanPSL-2.0", "Multics", "Mup", "NAIST-2003", "NASA-1.3", "Naumen", "NBPL-1.0", "NCGL-UK-2.0", "NCSA", "Net-SNMP", "NetCDF", "Newsletr", "NGPL", "NICTA-1.0", "NIST-PD", "NIST-PD-fallback", "NIST-Software", "NLOD-1.0", "NLOD-2.0", "NLPL", "Nokia", "NOSL", "Noweb", "NPL-1.0", "NPL-1.1", "NPOSL-3.0", "NRL", "NTP", "NTP-0", "O-UDA-1.0", "OCCT-PL", "OCLC-2.0", "ODbL-1.0", "ODC-By-1.0", "OFFIS", "OFL-1.0", "OFL-1.0-no-RFN", "OFL-1.0-RFN", "OFL-1.1", "OFL-1.1-no-RFN", "OFL-1.1-RFN", "OGC-1.0", "OGDL-Taiwan-1.0", "OGL-Canada-2.0", "OGL-UK-1.0", "OGL-UK-2.0", "OGL-UK-3.0", "OGTSL", "OLDAP-1.1", "OLDAP-1.2", "OLDAP-1.3", "OLDAP-1.4", "OLDAP-2.0", "OLDAP-2.0.1", "OLDAP-2.1", "OLDAP-2.2", "OLDAP-2.2.1", "OLDAP-2.2.2", "OLDAP-2.3", "OLDAP-2.4", "OLDAP-2.5", "OLDAP-2.6", "OLDAP-2.7", "OLDAP-2.8", "OLFL-1.3", "OML", "OpenPBS-2.3", "OpenSSL", "OpenSSL-standalone", "OpenVision", "OPL-1.0", "OPL-UK-3.0", "OPUBL-1.0", "OSET-PL-2.1", "OSL-1.0", "OSL-1.1", "OSL-2.0", "OSL-2.1", "OSL-3.0", "PADL", "Parity-6.0.0", "Parity-7.0.0", "PDDL-1.0", "PHP-3.0", "PHP-3.01", "Pixar", "Plexus", "pnmstitch", "PolyForm-Noncommercial-1.0.0", "PolyForm-Small-Business-1.0.0", "PostgreSQL", "PSF-2.0", "psfrag", "psutils", "Python-2.0", "Python-2.0.1", "python-ldap", "Qhull", "QPL-1.0", "QPL-1.0-INRIA-2004", "radvd", "Rdisc", "RHeCos-1.1", "RPL-1.1", "RPL-1.5", "RPSL-1.0", "RSA-MD", "RSCPL", "Ruby", "SAX-PD", "SAX-PD-2.0", "Saxpath", "SCEA", "SchemeReport", "Sendmail", "Sendmail-8.23", "SGI-B-1.0", "SGI-B-1.1", "SGI-B-2.0", "SGI-OpenGL", "SGP4", "SHL-0.5", "SHL-0.51", "SimPL-2.0", "SISSL", "SISSL-1.2", "SL", "Sleepycat", "SMLNJ", "SMPPL", "SNIA", "snprintf", "softSurfer", "Soundex", "Spencer-86", "Spencer-94", "Spencer-99", "SPL-1.0", "ssh-keyscan", "SSH-OpenSSH", "SSH-short", "SSLeay-standalone", "SSPL-1.0", "SugarCRM-1.1.3", "Sun-PPP", "SunPro", "SWL", "swrule", "Symlinks", "TAPR-OHL-1.0", "TCL", "TCP-wrappers", "TermReadKey", "TGPPL-1.0", "TMate", "TORQUE-1.1", "TOSL", "TPDL", "TPL-1.0", "TTWL", "TTYP0", "TU-Berlin-1.0", "TU-Berlin-2.0", "UCAR", "UCL-1.0", "ulem", "UMich-Merit", "Unicode-3.0", "Unicode-DFS-2015", "Unicode-DFS-2016", "Unicode-TOU", "UnixCrypt", "Unlicense", "UPL-1.0", "URT-RLE", "Vim", "VOSTROM", "VSL-1.0", "W3C", "W3C-19980720", "W3C-20150513", "w3m", "Watcom-1.0", "Widget-Workshop", "Wsuipa", "WTFPL", "X11", "X11-distribute-modifications-variant", "Xdebug-1.03", "Xerox", "Xfig", "XFree86-1.1", "xinetd", "xkeyboard-config-Zinoviev", "xlock", "Xnet", "xpp", "XSkat", "YPL-1.0", "YPL-1.1", "Zed", "Zeeff", "Zend-2.0", "Zimbra-1.3", "Zimbra-1.4", "Zlib", "zlib-acknowledgement", "ZPL-1.1", "ZPL-2.0", "ZPL-2.1", "Identifier", "AGPL-1.0", "AGPL-3.0", "BSD-2-Clause-FreeBSD", "BSD-2-Clause-NetBSD", "bzip2-1.0.5", "eCos-2.0", "GFDL-1.1", "GFDL-1.2", "GFDL-1.3", "GPL-1.0", "GPL-1.0+", "GPL-2.0", "GPL-2.0+", "GPL-2.0-with-autoconf-exception", "GPL-2.0-with-bison-exception", "GPL-2.0-with-classpath-exception", "GPL-2.0-with-font-exception", "GPL-2.0-with-GCC-exception", "GPL-3.0", "GPL-3.0+", "GPL-3.0-with-autoconf-exception", "GPL-3.0-with-GCC-exception", "LGPL-2.0", "LGPL-2.0+", "LGPL-2.1", "LGPL-2.1+", "LGPL-3.0", "LGPL-3.0+", "Nunit", "StandardML-NJ", "wxWindows"]
                },
                "ref": {
                    "description": "Internet reference for the full definition of the copyright terms.",
                    "type": ["string", "null"],
                    "format": "uri"
                },
                "meta": { "$ref": "#/$defs/meta" }
            },
            "required": ["identifier", "ref"]
        },
        "registrations": {
            "description": "One or more Registration objects.",
            "type": "array",
            "items": { "$ref": "#/$defs/registration" }
        },
        "revisions": {
            "description": "A list of Revision objects.",
            "type": "array",
            "items": { "$ref": "#/$defs/revision" }
        },
        "taggable": {
            "description": "Master index of all slug-formatted keywords in the entire document.",
            "type": "array",
            "items": {
                "type": ["string", "null"],
                "pattern": "/^[a-z0-9]+(?:-[a-z0-9]+)*$/"
            },
            "uniqueItems": true
        }
    },
    "required": [
         "id", 
         "guid", 
         "title", 
         "lang", 
         "locale", 
         "charset", 
         "dir", 
         "authors", 
         "colors", 
         "contributors", 
         "derivations", 
         "document", 
         "encryption", 
         "license", 
         "registrations", 
         "revisions", 
         "taggable"
    ]
}