# Una página rotulada en seis idiomas

> Una página de cómic con división y dibujos fijos, rotulada por idioma: el locale elige la letra; el japonés va en vertical y, como el árabe, se lee al revés.

- Versión HTML: https://postext.dev/es/cookbook/one-page-six-languages
- Receta N.º 153 · Cómic y manga · Nivel 3 (Avanzado) · Salidas: Canvas, PDF
- Géneros: Cómics
- Requiere postext ≥ 1.21.0, postext-pdf ≥ 1.21.0 · probada con 1.21.0, postext-pdf 1.21.0 el 2026-10-07
- Páginas: [1](https://postext.dev/cookbook/one-page-six-languages/es/p01.webp?v=a7b1906c), [1](https://postext.dev/cookbook/one-page-six-languages/es/p02.webp?v=a7b1906c)
- PDF: https://postext.dev/cookbook/one-page-six-languages/es/one-page-six-languages.pdf?v=a7b1906c
- Abrir en el Sandbox: https://postext.dev/es/sandbox#recipe=one-page-six-languages&lang=es (.postext: https://postext.dev/cookbook/one-page-six-languages/es/one-page-six-languages.postext)
- Última actualización: 2026-10-07
- Otros idiomas: [en](https://postext.dev/en/cookbook/one-page-six-languages.md), [ca](https://postext.dev/ca/cookbook/one-page-six-languages.md), [pt](https://postext.dev/pt/cookbook/one-page-six-languages.md), [zh](https://postext.dev/zh/cookbook/one-page-six-languages.md), [ja](https://postext.dev/ja/cookbook/one-page-six-languages.md), [ar](https://postext.dev/ar/cookbook/one-page-six-languages.md)

## En pocas palabras

La misma página de cómic en inglés, español, francés, japonés, chino y árabe: solo cambian las palabras, y Postext redibuja cada bocadillo alrededor de ellas.

## Lo que vas a componer

Una página de cómic, *La radio del faro*: Maya llega al faro de su abuelo cuando entra una tormenta, la radio no funciona y el culpable es Biscuit, dormido encima del cable. La división y los cinco dibujos a la acuarela son fijos; de una edición a otra solo cambia un guion de nueve líneas. Cada edición de esta receta compone su propio idioma y, al lado, la página en francés: inglés y francés, español y francés, y así con el japonés, el chino y el árabe. El motor redibuja cada bocadillo alrededor de las palabras que lleva. El japonés se rotula en columnas verticales con Zen Antique. Las páginas japonesa y árabe se leen desde la derecha, así que las tres viñetas de la tira central cambian de sitio.

**Esta receta responde a:**

- ¿Cómo rotulo un cómic en otro idioma?
- ¿Cómo rotulo japonés en vertical dentro de los bocadillos?

## La respuesta corta

```js
// script.js, líneas 33–52
const LOCALE = t({ en: 'en-gb', es: 'es', ja: 'ja', zh: 'zh-Hans', ar: 'ar' });
const comics = {
  // No fontFamily: each language is lettered in its own comic face (defaultComicFont):
  // Comic Neue, Zen Antique for Japanese, Noto Sans SC, Playpen Sans Arabic. The size is
  // one for the whole book: a longer translation grows its balloons, never shrinks its text.
  lettering: { fontSize: pt(8.5), lineHeight: 1.12, color: col('ink') },
  // writingMode 'auto' (the default): Japanese is lettered in vertical columns.
  // readingDirection 'auto': a Japanese or Arabic page reads from the right, so the
  // tier of three panels is laid out right to left from the same split. The art keeps
  // its drawn direction (mirrorArt: false).
  panel: { borderWidth: pt(1), borderColor: col('ink') },
  gutter: { horizontal: mm(4), vertical: mm(3) },
  balloonStyles: [
    { id: 'caption', fill: col('caption'), stroke: col('ink'), strokeWidth: pt(0.6) },
    { id: 'sfx', color: col('red'), halo: pt(1.4), haloColor: col('paper'), rotate: -8 },
  ],
  readingDirection: 'auto', // the default, written out: it is what an edition flips
  cast: [{ id: 'maya', name: 'Maya' }, { id: 'tomas', name: 'Tomás' }],
  runningHeads: true, // the footer prints on the comic page
};
```

## Ingredientes

**Enseña**

- [Rotular en otros idiomas](https://postext.dev/es/docs/comics.md#rotulación): La división, las imágenes, los recortes y las anclas de los personajes pertenecen a la página; el Markdown de cada idioma solo lleva las palabras, y los bocadillos se rehacen alrededor del texto de cada traducción.
- [Sentido de lectura y orden del manga](https://postext.dev/es/docs/comics.md#sentido-de-lectura): Las viñetas llenan las celdas en orden de lectura: de izquierda a derecha, o de derecha a izquierda en el manga y en los idiomas que se escriben de derecha a izquierda; comics.artDirection y mirrorArt deciden cuándo se invierte la imagen para que coincida.

**También usa**

- [Rotulación de cómic](https://postext.dev/es/docs/comics.md#rotulación)
- [Personajes y anclas](https://postext.dev/es/docs/comics.md#personajes-y-anclas)
- [División en viñetas](https://postext.dev/es/docs/comics.md#dividir-la-página)
- [Imagen y recorte de la viñeta](https://postext.dev/es/docs/comics.md#viñetas-e-imágenes)
- [Páginas de cómic](https://postext.dev/es/docs/comics.md#páginas-de-cómic)
- [Estilos de bocadillo](https://postext.dev/es/docs/comics.md#estilos-de-bocadillo)
- [Onomatopeyas](https://postext.dev/es/docs/comics.md#estilos-de-bocadillo)
- [Fuentes chinas, japonesas y coreanas](https://postext.dev/es/docs/configuration.md#fuentes-chinas-japonesas-y-coreanas)
- [Fuentes árabes](https://postext.dev/es/docs/arabic-layout.md#fuentes)
- [Texto de derecha a izquierda](https://postext.dev/es/docs/arabic-layout.md#dirección-y-algoritmo-bidireccional)
- [Texto vertical](https://postext.dev/es/docs/configuration.md#escritura-vertical)
- [Paleta de color semántica](https://postext.dev/es/docs/configuration.md#paleta-de-colores)
- [Páginas en un canvas](https://postext.dev/es/docs/configuration.md#renderizar-una-página-a-un-bitmap)
- [Exportación a PDF](https://postext.dev/es/docs/configuration.md#generación-de-pdf)
- [Bordes y calles de las viñetas](https://postext.dev/es/docs/comics.md#viñetas-e-imágenes)
- [Cabeceras según el tipo de página](https://postext.dev/es/docs/configuration.md#elementos-de-texto)
- [Fuentes incrustadas en el PDF](https://postext.dev/es/docs/configuration.md#por-qué-un-proveedor-de-fuentes)
- [Figuras y tablas como recursos](https://postext.dev/es/docs/document-format.md#recursos)

**La configuración de un vistazo**

- [`bodyText`](https://postext.dev/es/docs/configuration.md#texto-de-cuerpo), [`colorPalette`](https://postext.dev/es/docs/configuration.md#paleta-de-colores), [`comics`](https://postext.dev/es/docs/comics.md#páginas-de-cómic), [`footer`](https://postext.dev/es/docs/configuration.md#encabezados-y-pies), [`header`](https://postext.dev/es/docs/configuration.md#encabezados-y-pies), [`headings`](https://postext.dev/es/docs/configuration.md#encabezados), [`layout`](https://postext.dev/es/docs/configuration.md#disposición), [`locale`](https://postext.dev/es/docs/configuration.md#separación-silábica), [`page`](https://postext.dev/es/docs/configuration.md#página)

**API**

- [`buildDocument`](https://postext.dev/es/docs/configuration.md#construir-un-documento), [`clearMeasurementCache`](https://postext.dev/es/docs/configuration.md#caché-de-medidas), [`decompressWoff2`](https://postext.dev/es/docs/configuration.md#proveedor-de-fuentes-en-el-navegador-fontsource--woff2), `defaultComicFont`, `defaultComicSfxFont`, [`registerResourceImage`](https://postext.dev/es/docs/architecture.md#superficie-de-api), [`renderPageToCanvas`](https://postext.dev/es/docs/configuration.md#renderizar-una-página-a-un-bitmap), [`renderToPdf`](https://postext.dev/es/docs/configuration.md#generación-de-pdf)

**Tipografías**

- Comic Neue (OFL-1.1), Bangers (OFL-1.1), Zen Antique (OFL-1.1), Dela Gothic One (OFL-1.1), Noto Sans SC (OFL-1.1), ZCOOL KuaiLe (OFL-1.1), Playpen Sans Arabic (OFL-1.1), Lalezar (OFL-1.1)

## Elaboración

### 1 · Una config para todos los idiomas

El código está en [la respuesta corta](https://postext.dev/es/cookbook/one-page-six-languages.md#la-respuesta-corta). En la config nada nombra un idioma salvo `locale`. Sin `fontFamily`, la rotulación toma la letra de cómic del idioma del documento (`defaultComicFont`): Comic Neue, Zen Antique, Noto Sans SC o Playpen Sans Arabic, y la onomatopeya la letra de rótulo que le corresponde. `writingMode: 'auto'` pone los bocadillos japoneses en columnas verticales; `readingDirection: 'auto'` hace que las páginas japonesa y árabe se lean desde la derecha, como sus idiomas, de modo que el mismo `split="30 / 35 [* | * | *] / *"` coloca la viñeta de la radio a la derecha y la del gato a la izquierda. Los ids de los personajes (`maya`, `tomas`) son los mismos en todos los guiones, y a ellos responden los anclajes de los dibujos.

El cuerpo es uno para todo el libro. El guion inglés tiene 216 letras, el español 220, el francés 224 y el chino 74 caracteres; los guiones más largos tienen bocadillos más grandes, nunca letra más pequeña.

### 2 · El francés va en todas las ediciones

```js
// script.js, líneas 213–218
const build = (md, cfg) =>
  buildWithFonts(() => buildDocument({ markdown: md, resources }, cfg), md);
const docs = [await build(markdown, config())];
// French is not a site language, so every edition carries its page: the same config
// with another locale, as a new object (the engine caches resolved configs by identity).
docs.push(await build(french, { ...config(), locale: 'fr', footer: footerFor('fr', 'fr') }));
```

El sitio no tiene páginas en francés, así que cada edición construye dos documentos: su propia página y luego la francesa, desde `content.fr.en.md`, con la misma config y `locale` `'fr'`. La config se copia en un objeto nuevo, porque el motor guarda las configs resueltas por identidad. El guion francés lleva el espacio fino de no separación antes de `!` y `?`, como manda la tipografía francesa.

### 3 · Los dibujos no cambian

```js
// script.js, líneas 119–194
const box = ([x, y, width, height]) => ({ x, y, width, height });
const who = (id, x, y, head, face) => ({ id, x, y,
  ...(head && { head: { x: head[0], y: head[1] } }), ...(face && { face: box(face) }) });
const ART = {
  'lh-arrive': { width: 1100, height: 733, safeArea: box([.22, .08, .4, .64]),
    alt: t({ en: 'A girl in a yellow raincoat walks up a coastal path towards a red-and-white '
        + 'lighthouse, a fat orange cat trotting ahead; storm clouds gather over the sea.',
      es: 'Una niña con chubasquero amarillo sube por un camino de costa hacia un faro '
        + 'rojo y blanco, con un gato naranja gordo trotando delante; sobre el mar se '
        + 'acumulan nubes de tormenta.',
      zh: '一个穿黄色雨衣的女孩沿着海边小路走向红白相间的灯塔，一只胖橘猫小跑在前面；海上聚起了暴风雨的乌云。',
      ar: 'فتاة بمعطف مطر أصفر تصعد دربًا ساحليًا نحو منارة حمراء وبيضاء، وأمامها قط '
        + 'برتقالي سمين يهرول، والغيوم تتجمّع فوق البحر.',
      ja: '黄色いレインコートの女の子が、赤と白の灯台へ続く海辺の小道をのぼっていく。前を太ったオレンジ色の猫が小走りし、海の上には嵐の雲が集まっている。' }),
    anchors: [
      who('maya', .29, .52, [.27, .47], [.22, .42, .12, .16]),
      who('biscuit', .4, .68, [.4, .66], [.37, .64, .07, .08]),
    ],
    avoid: [box([.51, .09, .1, .43])],
  },
  'lh-radio': { width: 1000, height: 1000, safeArea: box([.11, .36, .36, .31]),
    alt: t({ en: 'The old keeper, white-bearded in a navy sweater and cap, taps a valve radio '
        + 'in the lamp room, microphone in hand; the great lens glows beside him.',
      es: 'El viejo farero, de barba blanca, jersey azul marino y gorra, golpea una radio '
        + 'de válvulas en la sala de la lámpara con el micrófono en la mano; a su lado '
        + 'brilla la gran lente.',
      zh: '白胡子的老守塔人穿着藏青色毛衣、戴着帽子，在灯室里手握话筒敲着一台电子管收音机；巨大的透镜在他身旁发光。',
      ar: 'حارس المنارة العجوز بلحيته البيضاء وكنزته الكحلية وقبعته ينقر على مذياع قديم '
        + 'في غرفة الفانوس والميكروفون في يده، والعدسة الكبيرة تتوهّج بجانبه.',
      ja: '白いひげの老灯台守が、紺のセーターに帽子姿で、灯室でマイクを握って真空管ラジオをたたいている。そばで大きなレンズが光っている。' }),
    anchors: [
      who('tomas', .345, .52, [.38, .44], [.29, .4, .16, .18]),
    ],
    avoid: [box([0, .44, .22, .26])],
  },
  'lh-maya': { width: 1100, height: 1100, safeArea: box([.25, .27, .41, .68]),
    alt: t({ en: 'Close-up of Maya frowning at the floor and pointing down.',
      es: 'Primer plano de Maya, que frunce el ceño mirando al suelo y señala hacia abajo.',
      zh: '玛雅的特写：她皱着眉头看着地板，手指向下指。',
      ar: 'لقطة قريبة لمايا وهي تعقد حاجبيها ناظرةً إلى الأرض وتشير إلى أسفل.',
      ja: 'マヤのアップ。眉をひそめて床を見つめ、下を指さしている。' }),
    anchors: [
      who('maya', .54, .565, [.5, .3], [.4, .33, .24, .29]),
    ],
    avoid: [box([.27, .73, .25, .22])],
  },
  'lh-biscuit': { width: 1000, height: 1000, safeArea: box([.58, .25, .42, .33]),
    alt: t({ en: 'Under the desk, the fat orange cat sleeps on his back on top of the black '
        + 'radio cable, squashing it flat.',
      es: 'Bajo la mesa, el gato naranja gordo duerme panza arriba encima del cable negro '
        + 'de la radio y lo aplasta.',
      zh: '桌子底下，胖橘猫四脚朝天地睡在收音机的黑色电线上，把电线压得扁扁的。',
      ar: 'تحت المكتب ينام القط البرتقالي السمين على ظهره فوق سلك المذياع الأسود ويسحقه.',
      ja: '机の下で、太ったオレンジ色の猫がラジオの黒いコードの上にあおむけで眠り、コードをぺしゃんこにしている。' }),
    anchors: [
      who('biscuit', .72, .355, [.73, .32], [.64, .27, .2, .18]),
    ],
    avoid: [box([.93, .28, .07, .24]), box([0, .72, .4, .1])],
  },
  'lh-beam': { width: 1200, height: 800, safeArea: box([.15, .01, .25, .3]),
    alt: t({ en: 'Night: the lighthouse beam sweeps over a dark sea; Maya and her grandfather '
        + 'stand on the lantern gallery, and far out a fishing boat shows its lights.',
      es: 'De noche, el haz del faro barre un mar oscuro; Maya y su abuelo están en la '
        + 'galería de la linterna y a lo lejos se ven las luces de un pesquero.',
      zh: '夜里，灯塔的光束扫过漆黑的海面；玛雅和外公站在灯室外的回廊上，远处一艘渔船亮着灯。',
      ar: 'ليلًا يمسح شعاع المنارة بحرًا مظلمًا، ومايا وجدّها واقفان على شرفة الفانوس، '
        + 'وفي البعيد قارب صيد بأضوائه.',
      ja: '夜。灯台の光の帯が暗い海をなでる。マヤと祖父は灯室の回廊に立ち、沖には漁船の明かりが見える。' }),
    anchors: [
      who('maya', .235, .15, null, [.21, .11, .05, .07]),
      who('tomas', .3, .145, null, [.28, .11, .04, .06]),
    ],
    avoid: [box([.79, .55, .08, .09])],
  },

};
```

Las zonas seguras son más estrechas que las celdas de esta división: la tira central tiene tres viñetas de unos 46 mm de ancho por 80 mm de alto, así que cada dibujo cuadrado muestra una columna de cerca del 58 % de su anchura, y su zona segura, la cara del personaje y aquello de lo que habla, ocupa del 36 al 42 %. Los dibujos no se reflejan para el japonés ni para el árabe (`mirrorArt` sigue en false): Maya sigue subiendo el camino desde la izquierda, y solo el orden de las viñetas sigue a la lectura.

## La receta completa

Un solo archivo, compuesto a partir de la carpeta de la receta con el texto de ejemplo y el kit común del Recetario ya incluidos; construye su propia página. Para ejecutarlo, ponlo en un `<script type="module">` de una página vacía o pégalo en el panel JS de un pen nuevo de CodePen (como módulo). Importa postext desde esm.sh, así que no hay nada que instalar ni compilar.

- Carpeta de la receta: https://github.com/drnachio/postext/tree/main/cookbook/one-page-six-languages

### script.js

```js
// ═══ Postext Cookbook · Nº 153 · One page lettered in six languages ═══════════════════
// https://postext.dev/en/cookbook/one-page-six-languages
// Code: MIT · Story: written for the recipe (CC BY 4.0) · Pictures: generated with diffusion models
// Fonts: Comic Neue, Bangers, the comic faces of each script (OFL) · Needs postext ≥ 1.21.0
// One comic page, its split and its five pictures fixed, lettered from a script per
// language: each edition sets its own page, and the French one beside it.
import {
  buildDocument, renderPageToCanvas, clearMeasurementCache, registerResourceImage,
  defaultComicFont, defaultComicSfxFont,
} from 'https://esm.sh/postext';
import { renderToPdf, decompressWoff2 } from 'https://esm.sh/postext-pdf';

const LANG = 'es'; // @lang: the edition: 'en' | 'es' | 'ja' | 'zh' | 'ar' (French rides along)
const RECIPE = 'one-page-six-languages';

// ─── 1 · Design ─────────────────────────────────────────────────────────────
// #region palette: ink and paper, the lighthouse red for the sound effect
const palette = {
  ink: '#1b1d22', // borders, lettering
  red: '#c23a2b', // the purr (4.9:1 on paper)
  caption: '#f3ead2', // narration boxes, the colour of old charts
  muted: '#5d6068', // the footer
  paper: '#ffffff',
};
const col = (id) => ({ hex: palette[id], model: 'hex', paletteId: id });
const colorPalette = [
  ...Object.entries(palette).map(([id, hex]) => ({ id, name: id, value: { hex, model: 'hex' } })),
  { id: 'main-color', name: 'red (defaults)', value: { hex: palette.red, model: 'hex' } },
];
// #endregion

// #region answer: one config for every language; the locale picks face, direction and columns
const LOCALE = t({ en: 'en-gb', es: 'es', ja: 'ja', zh: 'zh-Hans', ar: 'ar' });
const comics = {
  // No fontFamily: each language is lettered in its own comic face (defaultComicFont):
  // Comic Neue, Zen Antique for Japanese, Noto Sans SC, Playpen Sans Arabic. The size is
  // one for the whole book: a longer translation grows its balloons, never shrinks its text.
  lettering: { fontSize: pt(8.5), lineHeight: 1.12, color: col('ink') },
  // writingMode 'auto' (the default): Japanese is lettered in vertical columns.
  // readingDirection 'auto': a Japanese or Arabic page reads from the right, so the
  // tier of three panels is laid out right to left from the same split. The art keeps
  // its drawn direction (mirrorArt: false).
  panel: { borderWidth: pt(1), borderColor: col('ink') },
  gutter: { horizontal: mm(4), vertical: mm(3) },
  balloonStyles: [
    { id: 'caption', fill: col('caption'), stroke: col('ink'), strokeWidth: pt(0.6) },
    { id: 'sfx', color: col('red'), halo: pt(1.4), haloColor: col('paper'), rotate: -8 },
  ],
  readingDirection: 'auto', // the default, written out: it is what an edition flips
  cast: [{ id: 'maya', name: 'Maya' }, { id: 'tomas', name: 'Tomás' }],
  runningHeads: true, // the footer prints on the comic page
};
// #endregion

const NAMES = { en: 'English', es: 'Español', ja: '日本語', zh: '中文', ar: 'العربية', fr: 'Français' };
const footerFor = (lang, locale) => ({ elements: [{ kind: 'text', id: 'edition',
  content: `${NAMES[lang]} · ${defaultComicFont(locale)}`, fontFamily: defaultComicFont(locale),
  fontSize: pt(8), color: col('muted'), align: 'center', pages: 'comic',
  placement: { anchor: { to: 'page', edge: 'bottom' }, offset: { y: mm(-8) } } }] });

const config = () => ({ // a factory: the engine caches resolved configs per object
  locale: LOCALE,
  colorPalette,
  page: {
    sizePreset: 'custom', width: mm(170), height: mm(260), dpi: 150, // a comic book
    margins: { top: mm(14), bottom: mm(18), left: mm(12), right: mm(12), mirror: true },
  },
  layout: { layoutType: 'single' },
  bodyText: { fontFamily: defaultComicFont(LOCALE), fontSize: pt(10), lineHeight: pt(14),
    color: col('ink'), boldColor: col('ink'), italicColor: col('ink'), referenceColor: col('ink') },
  headings: { color: col('ink'),
    levels: [{ level: 1, breakBefore: { enabled: true, parity: 'any' } }] }, // the H1 break
  comics,
  header: { elements: [] },
  footer: footerFor(LANG, LOCALE),
});

// ─── 2 · Content ────────────────────────────────────────────────────────────
const markdown = String.raw`:::page{split="30 / 35 [* | * | *] / *"}
::panel{art=lh-arrive}
caption: Maya pasaba todos los veranos en el faro.
maya: ¡Abuelo! ¡Ya estoy aquí!
::panel{art=lh-radio}
tomas: Llegas a tiempo. La radio no funciona y viene tormenta.
::panel{art=lh-maya}
maya: Abuelo… creo que ya sé qué le pasa.
::panel{art=lh-biscuit}
sfx: rrrrrr
::panel{art=lh-beam}
tomas: Radio en marcha, faro encendido.
maya: Y Biscuit tiene cama nueva.
:::
`; // content.<lang>.md: the page in the edition's language
const french = String.raw`:::page{split="30 / 35 [* | * | *] / *"}
::panel{art=lh-arrive}
caption: Maya passait tous ses étés au phare.
maya: Papi ! Je suis là !
::panel{art=lh-radio}
tomas: Tu tombes bien. La radio est morte, et une tempête arrive.
::panel{art=lh-maya}
maya: Papi… je crois que j’ai trouvé la panne.
::panel{art=lh-biscuit}
sfx: rrrrrr
::panel{art=lh-beam}
tomas: La radio marche, le phare est allumé.
maya: Et Biscuit a un nouveau lit.
:::
`; // content.fr.en.md: the French page, in every edition

// ─── 3 · Fonts ──────────────────────────────────────────────────────────────
const FONTS = {
  'Comic Neue': ['400', '700', '400i', '700i'], Bangers: ['400'], // Latin
  'Zen Antique': ['400'], 'Dela Gothic One': ['400'], // Japanese
  'Noto Sans SC': ['400', '700'], 'ZCOOL KuaiLe': ['400'], // Chinese
  'Playpen Sans Arabic': ['400', '700'], Lalezar: ['400'], // Arabic
};

// #region art: the panel manifest: safe areas, speakers' mouths, heads and faces, in fractions
const box = ([x, y, width, height]) => ({ x, y, width, height });
const who = (id, x, y, head, face) => ({ id, x, y,
  ...(head && { head: { x: head[0], y: head[1] } }), ...(face && { face: box(face) }) });
const ART = {
  'lh-arrive': { width: 1100, height: 733, safeArea: box([.22, .08, .4, .64]),
    alt: t({ en: 'A girl in a yellow raincoat walks up a coastal path towards a red-and-white '
        + 'lighthouse, a fat orange cat trotting ahead; storm clouds gather over the sea.',
      es: 'Una niña con chubasquero amarillo sube por un camino de costa hacia un faro '
        + 'rojo y blanco, con un gato naranja gordo trotando delante; sobre el mar se '
        + 'acumulan nubes de tormenta.',
      zh: '一个穿黄色雨衣的女孩沿着海边小路走向红白相间的灯塔，一只胖橘猫小跑在前面；海上聚起了暴风雨的乌云。',
      ar: 'فتاة بمعطف مطر أصفر تصعد دربًا ساحليًا نحو منارة حمراء وبيضاء، وأمامها قط '
        + 'برتقالي سمين يهرول، والغيوم تتجمّع فوق البحر.',
      ja: '黄色いレインコートの女の子が、赤と白の灯台へ続く海辺の小道をのぼっていく。前を太ったオレンジ色の猫が小走りし、海の上には嵐の雲が集まっている。' }),
    anchors: [
      who('maya', .29, .52, [.27, .47], [.22, .42, .12, .16]),
      who('biscuit', .4, .68, [.4, .66], [.37, .64, .07, .08]),
    ],
    avoid: [box([.51, .09, .1, .43])],
  },
  'lh-radio': { width: 1000, height: 1000, safeArea: box([.11, .36, .36, .31]),
    alt: t({ en: 'The old keeper, white-bearded in a navy sweater and cap, taps a valve radio '
        + 'in the lamp room, microphone in hand; the great lens glows beside him.',
      es: 'El viejo farero, de barba blanca, jersey azul marino y gorra, golpea una radio '
        + 'de válvulas en la sala de la lámpara con el micrófono en la mano; a su lado '
        + 'brilla la gran lente.',
      zh: '白胡子的老守塔人穿着藏青色毛衣、戴着帽子，在灯室里手握话筒敲着一台电子管收音机；巨大的透镜在他身旁发光。',
      ar: 'حارس المنارة العجوز بلحيته البيضاء وكنزته الكحلية وقبعته ينقر على مذياع قديم '
        + 'في غرفة الفانوس والميكروفون في يده، والعدسة الكبيرة تتوهّج بجانبه.',
      ja: '白いひげの老灯台守が、紺のセーターに帽子姿で、灯室でマイクを握って真空管ラジオをたたいている。そばで大きなレンズが光っている。' }),
    anchors: [
      who('tomas', .345, .52, [.38, .44], [.29, .4, .16, .18]),
    ],
    avoid: [box([0, .44, .22, .26])],
  },
  'lh-maya': { width: 1100, height: 1100, safeArea: box([.25, .27, .41, .68]),
    alt: t({ en: 'Close-up of Maya frowning at the floor and pointing down.',
      es: 'Primer plano de Maya, que frunce el ceño mirando al suelo y señala hacia abajo.',
      zh: '玛雅的特写：她皱着眉头看着地板，手指向下指。',
      ar: 'لقطة قريبة لمايا وهي تعقد حاجبيها ناظرةً إلى الأرض وتشير إلى أسفل.',
      ja: 'マヤのアップ。眉をひそめて床を見つめ、下を指さしている。' }),
    anchors: [
      who('maya', .54, .565, [.5, .3], [.4, .33, .24, .29]),
    ],
    avoid: [box([.27, .73, .25, .22])],
  },
  'lh-biscuit': { width: 1000, height: 1000, safeArea: box([.58, .25, .42, .33]),
    alt: t({ en: 'Under the desk, the fat orange cat sleeps on his back on top of the black '
        + 'radio cable, squashing it flat.',
      es: 'Bajo la mesa, el gato naranja gordo duerme panza arriba encima del cable negro '
        + 'de la radio y lo aplasta.',
      zh: '桌子底下，胖橘猫四脚朝天地睡在收音机的黑色电线上，把电线压得扁扁的。',
      ar: 'تحت المكتب ينام القط البرتقالي السمين على ظهره فوق سلك المذياع الأسود ويسحقه.',
      ja: '机の下で、太ったオレンジ色の猫がラジオの黒いコードの上にあおむけで眠り、コードをぺしゃんこにしている。' }),
    anchors: [
      who('biscuit', .72, .355, [.73, .32], [.64, .27, .2, .18]),
    ],
    avoid: [box([.93, .28, .07, .24]), box([0, .72, .4, .1])],
  },
  'lh-beam': { width: 1200, height: 800, safeArea: box([.15, .01, .25, .3]),
    alt: t({ en: 'Night: the lighthouse beam sweeps over a dark sea; Maya and her grandfather '
        + 'stand on the lantern gallery, and far out a fishing boat shows its lights.',
      es: 'De noche, el haz del faro barre un mar oscuro; Maya y su abuelo están en la '
        + 'galería de la linterna y a lo lejos se ven las luces de un pesquero.',
      zh: '夜里，灯塔的光束扫过漆黑的海面；玛雅和外公站在灯室外的回廊上，远处一艘渔船亮着灯。',
      ar: 'ليلًا يمسح شعاع المنارة بحرًا مظلمًا، ومايا وجدّها واقفان على شرفة الفانوس، '
        + 'وفي البعيد قارب صيد بأضوائه.',
      ja: '夜。灯台の光の帯が暗い海をなでる。マヤと祖父は灯室の回廊に立ち、沖には漁船の明かりが見える。' }),
    anchors: [
      who('maya', .235, .15, null, [.21, .11, .05, .07]),
      who('tomas', .3, .145, null, [.28, .11, .04, .06]),
    ],
    avoid: [box([.79, .55, .08, .09])],
  },

};
// #endregion

// ─── 4 · Build & show ───────────────────────────────────────────────────────
const text = markdown + french + Object.values(NAMES).join(' ');
const faces = Object.fromEntries([LOCALE, 'fr'].flatMap((l) => [defaultComicFont(l),
  defaultComicSfxFont(l)]).map((family) => [family, FONTS[family]]));
await loadFonts(FONTS, text); // the Latin files of every face
await loadCjkFonts(faces, markdown + NAMES[LANG]);
await loadArabicFonts(faces, markdown + NAMES[LANG]);
await loadComicFonts(faces, text);
const resources = await Promise.all([
  comicPanel('lh-arrive', asset('lh-arrive.jpg'), ART['lh-arrive']),
  comicPanel('lh-radio', asset('lh-radio.jpg'), ART['lh-radio']),
  comicPanel('lh-maya', asset('lh-maya.jpg'), ART['lh-maya']),
  comicPanel('lh-biscuit', asset('lh-biscuit.jpg'), ART['lh-biscuit']),
  comicPanel('lh-beam', asset('lh-beam.jpg'), ART['lh-beam']),
]);
// #region editions: the edition's page, then the French one from the same config and art
const build = (md, cfg) =>
  buildWithFonts(() => buildDocument({ markdown: md, resources }, cfg), md);
const docs = [await build(markdown, config())];
// French is not a site language, so every edition carries its page: the same config
// with another locale, as a new object (the engine caches resolved configs by identity).
docs.push(await build(french, { ...config(), locale: 'fr', footer: footerFor('fr', 'fr') }));
// #endregion
showBook(docs, { title: t({ en: 'One page in six languages', es: 'Una página en seis idiomas',
  ja: '六つの言語で写植した一ページ', zh: '用六种语言嵌字的一页漫画', ar: 'صفحة واحدة بست لغات' }) });
offerPdf(() => renderToPdf(docs[0], { fontProvider: comicPdfProvider, resourceBytes: imageBytes }),
  `${RECIPE}-${LANG}.pdf`);

// ─── Kit ── helpers shared by every Cookbook recipe · postext.dev/cookbook ─────

// ─── Kit · core v1 ── the same in every recipe · postext.dev/cookbook
function mm(value) { return { value, unit: 'mm' }; }
function pt(value) { return { value, unit: 'pt' }; }
function em(value) { return { value, unit: 'em' }; }
/** The sample language's string: t({ en: 'Figure', es: 'Figura' }). */
function t(strings) { return strings[LANG] ?? Object.values(strings)[0]; }
/** A file in this recipe's assets folder, served from the Postext repo by jsDelivr. */
function asset(file) { return `https://cdn.jsdelivr.net/gh/drnachio/postext@main/cookbook/${RECIPE}/assets/${file}`; }

// ─── Kit · fonts v2 ── the same in every recipe · postext.dev/cookbook
// Postext measures with the loaded faces and caches the widths: load every face
// before the first build, from Fontsource, the files the PDF embeds too.

/** faces = { 'Family Name': ['400', '400i', '700'] }. `text` is the sample:
 *  č ł † α χ also load latin-ext and greek files (kitSubsetsFor). With
 *  `optional`, a face Fontsource does not ship is skipped instead of failing.
 *  Resolves to the number of faces added. */
async function loadFonts(faces, text = '', { optional = false } = {}) {
  kitStatus('Loading fonts…');
  const ranges = {
    latin: 'U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,'
      + 'U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD',
    'latin-ext': 'U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,'
      + 'U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF',
    greek: 'U+0370-03FF',
  };
  const jobs = [];
  let added = 0;
  for (const [family, specs] of Object.entries(faces)) {
    const id = fontsourceId(family);
    const todo = [...new Set(specs)].map((spec) => [parseInt(spec, 10), spec.endsWith('i') ? 'italic' : 'normal'])
      .filter(([weight, style]) => !hasFace(family, weight, style)); // before any await
    const meta = optional || /[^\0-ÿ]/u.test(text) ? await fontsourceMeta(family) : null;
    const subsets = ['latin', ...kitSubsetsFor(text, meta)];
    for (const [weight, style] of todo) {
      if (optional && !(meta?.weights.includes(weight) && meta.styles.includes(style))) continue;
      for (const subset of subsets) {
        const url = `https://cdn.jsdelivr.net/npm/@fontsource/${id}@5/files/${id}-${subset}-${weight}-${style}.woff2`;
        const face = new FontFace(family, `url(${url}) format('woff2')`,
          { weight: String(weight), style, unicodeRange: ranges[subset] });
        jobs.push(face.load().then((ready) => { document.fonts.add(ready); added++; }, () => {
          if (subset === 'latin' && !optional) throw new Error(`Fontsource has no ${family} ${weight} ${style}`);
        }));
      }
    }
  }
  await Promise.all(jobs).catch((error) => { kitFail(error); throw error; });
  return added;
}

/** Runs `build` and loads any face the pages use that FONTS missed (a regular
 *  one with a warning), then clears the measurement cache and builds again. */
async function buildWithFonts(build, text = '') {
  const tried = new Set();
  for (let round = 0; round < 3; round++) {
    kitStatus('Laying out…');
    await new Promise(requestAnimationFrame);          // let the status paint first
    const result = await Promise.resolve().then(build).catch((error) => { kitFail(error); throw error; });
    const wanted = { base: {}, variants: {} };
    for (const { font, base } of [result].flat().flatMap(fontStringsOf)) {
      const { family, weight, style } = parseFont(font);
      const key = `${family}|${weight}|${style}`;
      if (tried.has(key) || hasFace(family, weight, style)) continue;
      tried.add(key);
      (wanted[base ? 'base' : 'variants'][family] ??= []).push(`${weight}${style === 'italic' ? 'i' : ''}`);
    }
    if (Object.keys(wanted.base).length) {
      console.warn(`[cookbook] FONTS does not list ${JSON.stringify(wanted.base)}: loading them.`);
    }
    const added = await loadFonts(wanted.base, text) + await loadFonts(wanted.variants, text, { optional: true });
    if (added === 0) return result;
    clearMeasurementCache();
  }
  throw new Error('The fonts did not settle after three builds.');
}

/** Every font string of the layout; `base` marks a block's own face. */
function fontStringsOf(doc) {
  const found = new Map();
  const walk = (node) => {
    if (!node || typeof node !== 'object') return;
    if (Array.isArray(node)) { node.forEach(walk); return; }
    for (const [key, value] of Object.entries(node)) {
      if (typeof value === 'string' && /fontString$/i.test(key)) {
        found.set(value, found.get(value) || key === 'fontString');
      } else if (value && typeof value === 'object') walk(value);
    }
  };
  walk(doc.pages);
  walk(doc.blocks);
  return [...found].map(([font, base]) => ({ font, base }));
}

/** '700 37.5px Open Sans' / 'italic 400 13px "Source Serif 4"' → { family, weight, style }.
 *  A string with no weight ('95.8px Young Serif', from a design text) is 400. */
function parseFont(font) {
  const m = /^(?:(italic|oblique)\s+)?(?:small-caps\s+)?(?:(\d+|bold|normal)\s+)?[\d.]+px\s+(.+)$/.exec(font.trim());
  if (!m) throw new Error(`Unexpected font string: ${font}`);
  const weight = m[2] === 'bold' ? 700 : !m[2] || m[2] === 'normal' ? 400 : Number(m[2]);
  return { family: m[3].replace(/^["']|["']$/g, ''), weight, style: m[1] ? 'italic' : 'normal' };
}

/** A loaded FontFace covers this family, weight and style (fonts.check() would
 *  also say yes for families nobody declared). */
function hasFace(family, weight, style) {
  for (const face of document.fonts) {
    if (face.status !== 'loaded' || face.style !== style) continue;
    if (face.family.replace(/^["']|["']$/g, '') !== family) continue;
    const [low, high = low] = face.weight.split(' ').map(Number);
    if (weight >= low && weight <= high) return true;
  }
  return false;
}

/** The files beyond latin `text` needs that `meta`'s family ships. */
function kitSubsetsFor(text, meta) {
  return [[/[Ā-˿ᴀ-ᶿḀ-ỿ†ℓⱠ-Ɀ꜠-ꟿ]/u, 'latin-ext'], [/[Ͱ-Ͽ]/u, 'greek']]
    .filter(([re, x]) => re.test(text) && meta?.subsets?.includes(x)).map(([, x]) => x);
}

/** Fontsource's id for a family: 'Source Serif 4' → 'source-serif-4'. */
function fontsourceId(family) { return family.toLowerCase().replace(/\s+/g, '-'); }

/** The family's Fontsource metadata (weights, styles, subsets), or null. */
function fontsourceMeta(family) {
  fontsourceMeta.cache ??= new Map();
  const id = fontsourceId(family);
  if (!fontsourceMeta.cache.has(id)) {
    fontsourceMeta.cache.set(id, fetch(`https://api.fontsource.org/v1/fonts/${id}`)
      .then((res) => (res.ok ? res.json() : null), () => null));
  }
  return fontsourceMeta.cache.get(id);
}

// ─── Kit · viewer v1 ── the same in every recipe · postext.dev/cookbook
/** The pages as spreads on a dark desk, page 1 alone, then verso | recto,
 *  each painted when it scrolls near. */
function showPages(docs, { title, width = 460 } = {}) {
  const root = viewer(title);
  const pages = [docs].flat().flatMap((doc) =>
    doc.pages.map((page) => ({ doc, page, n: (doc.pageIndexOffset ?? 0) + page.index })));
  const spreads = [];
  let verso = null;
  for (const p of pages) {
    if (p.n % 2 === 1) { if (verso) spreads.push([verso, null]); verso = p; }
    else { spreads.push([verso, p]); verso = null; }
  }
  if (verso) spreads.push([verso, null]);
  const density = Math.min(window.devicePixelRatio || 1, 2);
  showPages.painter?.disconnect();
  const painter = new IntersectionObserver((entries) => {
    for (const { isIntersecting, target } of entries) {
      if (!isIntersecting) continue;
      painter.unobserve(target);
      const { doc, page } = target.postext;
      renderPageToCanvas(page, doc, target, { scale: (width * density) / page.width });
    }
  }, { rootMargin: '800px' });
  showPages.painter = painter;
  root.replaceChildren(...spreads.map((pair) => {
    const spread = document.createElement('div');
    spread.className = 'pt-spread';
    for (const p of pair) {
      const figure = document.createElement('figure');
      if (p) {
        const label = p.page.pageLabel || String(p.n + 1);
        const canvas = document.createElement('canvas');
        canvas.postext = p;
        canvas.style.aspectRatio = `${p.page.width} / ${p.page.height}`;
        canvas.setAttribute('role', 'img');
        canvas.setAttribute('aria-label', `Page ${label}`);
        const folio = document.createElement('figcaption');
        folio.textContent = label;
        figure.append(canvas, folio);
        painter.observe(canvas);
      } else figure.className = 'pt-blank';
      spread.append(figure);
    }
    return spread;
  }));
  kitStatus(`${pages.length} ${pages.length === 1 ? 'page' : 'pages'}`);
  document.documentElement.dataset.postext = 'ready';
  return pages.length;
}

/** The desk, the bar and the error reporting, created once. */
function viewer(title) {
  if (!document.getElementById('pt-kit')) {
    document.head.insertAdjacentHTML('beforeend', `<style id="pt-kit">
      :root { color-scheme: dark; }
      body { margin: 0; background: #0e1014; color: #b9bcc4; font: 13px/1.45 system-ui, sans-serif; }
      #pt-bar { position: sticky; top: 0; z-index: 1; display: flex; flex-wrap: wrap; align-items: center;
        gap: 6px 16px; padding: 10px 16px; background: rgb(14 16 20 / .92); backdrop-filter: blur(6px);
        border-bottom: 1px solid #23262d; }
      #pt-bar strong { color: #f4f1ea; font-weight: 600; }
      #pt-actions { display: flex; gap: 12px; margin-left: auto; }
      #pt-actions a, #pt-actions button { color: #d8a21a; font: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
      #pages { display: grid; justify-items: center; gap: 48px; padding: 32px 16px 72px; }
      .pt-spread { display: flex; }
      .pt-spread figure { margin: 0; width: min(460px, 44vw); }
      .pt-spread canvas { display: block; width: 100%; background: #fff;
        box-shadow: 0 1px 2px rgb(0 0 0 / .5), 0 22px 44px -16px rgb(0 0 0 / .8); }
      .pt-spread figure:first-child canvas { box-shadow: inset -14px 0 14px -14px rgb(0 0 0 / .18), 0 1px 2px rgb(0 0 0 / .5), 0 22px 44px -16px rgb(0 0 0 / .8); }
      .pt-spread figcaption { margin-top: 10px; text-align: center; font: 600 10px/1 system-ui, sans-serif;
        letter-spacing: .18em; text-transform: uppercase; color: #6c7079; }
      .pt-blank { visibility: hidden; }
      @media (max-width: 760px) {
        .pt-spread { flex-direction: column; gap: 32px; }
        .pt-spread figure { width: min(460px, 92vw); }
        .pt-blank { display: none; }
      }
    </style>`);
    document.body.insertAdjacentHTML('afterbegin',
      '<header id="pt-bar"><strong id="pt-title"></strong><span id="pt-status" role="status"></span><span id="pt-actions"></span></header>');
    document.getElementById('pt-title').textContent = document.title || 'Postext';
    addEventListener('error', (event) => kitFail(event.error ?? event.message));
    addEventListener('unhandledrejection', (event) => kitFail(event.reason));
  }
  if (title) document.getElementById('pt-title').textContent = title;
  return document.getElementById('pages')
    ?? document.body.appendChild(Object.assign(document.createElement('main'), { id: 'pages' }));
}

function kitStatus(text) {
  viewer();
  document.getElementById('pt-status').textContent = text;
}

function kitFail(error) {
  document.documentElement.dataset.postext = 'error';
  kitStatus(`Error: ${error?.message ?? error}`);
}

// ─── Kit · pdf v2 ── the same in every recipe that exports a PDF
/** The Fontsource files the screen used, as TrueType: the nearest weight the
 *  family ships, upright if it has no italic; latin, then what the face's
 *  letters need (kitSubsetsFor). */
async function fontsourceProvider(family, weight, style, request) {
  const id = fontsourceId(family);
  const meta = await fontsourceMeta(family);
  const weights = meta?.weights?.length ? meta.weights : [400, 700];
  const w = weights.reduce((a, b) => (Math.abs(b - weight) < Math.abs(a - weight) ? b : a));
  const s = style === 'italic' && meta && !meta.styles.includes('italic') ? 'normal' : style;
  const text = String.fromCodePoint(...(request?.codePoints ?? []));
  const more = kitSubsetsFor(text, meta);
  const files = await Promise.all(['latin', ...more].map(async (subset) => {
    const res = await fetch(`https://cdn.jsdelivr.net/npm/@fontsource/${id}@5/files/${id}-${subset}-${w}-${s}.woff2`);
    if (!res.ok) throw new Error(`Fontsource has no ${family} ${w} ${s} ${subset}`);
    return decompressWoff2(new Uint8Array(await res.arrayBuffer()));
  }));
  return files.length === 1 ? files[0] : files;
}

/** A "Build the PDF" button; then "Open the PDF" (a new tab: CodePen's frame
 *  shows no PDFs) and a download link. */
function offerPdf(makePdf, filename) {
  viewer();
  const button = Object.assign(document.createElement('button'), { type: 'button', textContent: 'Build the PDF' });
  button.dataset.postextPdf = filename;
  button.addEventListener('click', async () => {
    button.disabled = true;
    button.textContent = 'Building the PDF…';
    try {
      const bytes = await makePdf();
      const url = URL.createObjectURL(new Blob([bytes], { type: 'application/pdf' }));
      const size = `${Math.max(1, Math.round(bytes.length / 1024))} KB`;
      button.replaceWith(
        Object.assign(document.createElement('a'), { href: url, target: '_blank', rel: 'noopener', textContent: 'Open the PDF ↗' }),
        Object.assign(document.createElement('a'), { href: url, download: filename, textContent: `Download ${filename} · ${size}` }));
    } catch (error) {
      button.disabled = false;
      button.textContent = 'Build the PDF';
      kitFail(error);
    }
  });
  document.getElementById('pt-actions').append(button);
}

// ─── Kit · images v1 ── recipes with pictures · postext.dev/cookbook
/** Registers a photo or PNG for the canvas and keeps its bytes for the PDF.
 *  fetch → ImageBitmap never taints the canvas (a plain cross-origin <img> would). */
async function loadImage(fileId, url) {
  const res = await fetch(url);
  if (!res.ok) throw new Error(`Image not found (${res.status}): ${url}`);
  const bytes = new Uint8Array(await res.arrayBuffer());
  registerResourceImage(fileId, await createImageBitmap(new Blob([bytes])));
  (loadImage.bytes ??= new Map()).set(fileId, bytes);
}

/** Registers SVG markup (drawn in code, or fetched) as a vector image. */
async function loadSvg(fileId, svg) {
  const img = new Image();
  img.src = `data:image/svg+xml;charset=utf-8,${encodeURIComponent(svg)}`;
  await img.decode();
  registerResourceImage(fileId, img);
  (loadImage.bytes ??= new Map()).set(fileId, new TextEncoder().encode(svg));
}

/** renderToPdf({ resourceBytes: imageBytes }) */
function imageBytes(fileId) { return loadImage.bytes?.get(fileId); }

/** renderToHtml({ resourceImageUrl: imageUrl }) */
function imageUrl(fileId) {
  const bytes = imageBytes(fileId);
  if (!bytes) return undefined;
  imageUrl.urls ??= new Map();
  if (!imageUrl.urls.has(fileId)) {
    const type = /\.svg$/i.test(fileId) ? 'image/svg+xml' : /\.png$/i.test(fileId) ? 'image/png' : 'image/jpeg';
    imageUrl.urls.set(fileId, URL.createObjectURL(new Blob([bytes], { type })));
  }
  return imageUrl.urls.get(fileId);
}

// ─── Kit · cjk v1 ── Chinese, Japanese and Korean books · postext.dev/cookbook
// Fontsource ships a CJK family as about a hundred files per weight, each
// declared in its stylesheet with the unicode-range it covers. The screen
// loads the files the sample touches; the PDF gets the same files for the
// characters its pages set in each face, and embeds each as a subset.
// A book bound on the right (vertical text) is shown with its spreads
// mirrored: page 1 alone on the left of the spine, then [3 | 2].

/** The files of a Fontsource face, read from its stylesheet: { url, range,
 *  ranges }, the last declared first (the order the browser tries them in). */
function cjkSlices(family, weight, style) {
  cjkSlices.cache ??= new Map();
  const id = fontsourceId(family);
  const css = `https://cdn.jsdelivr.net/npm/@fontsource/${id}@5/${weight}${style === 'italic' ? '-italic' : ''}.css`;
  if (!cjkSlices.cache.has(css)) {
    cjkSlices.cache.set(css, fetch(css)
      .then((res) => {
        if (!res.ok) throw new Error(`Fontsource has no ${family} ${weight} ${style} (${res.status})`);
        return res.text();
      })
      .then((text) => [...text.matchAll(/@font-face\s*{([^}]*)}/g)].map(([, rule]) => {
        const range = /unicode-range:\s*([^;]+);/.exec(rule)?.[1].trim() ?? 'U+0-10FFFF';
        const ranges = range.split(',').map((part) => {
          const [lo, hi = lo] = part.trim().slice(2).split('-');
          return [parseInt(lo, 16), parseInt(hi, 16)];
        });
        return { url: new URL(/url\(([^)]+?\.woff2)\)/.exec(rule)[1], css).href, range, ranges };
      }).reverse()));
  }
  return cjkSlices.cache.get(css);
}

/** The file of `slices` that holds code point `cp`, if any. */
function cjkSliceFor(slices, cp) {
  return slices.find((slice) => slice.ranges.some(([lo, hi]) => cp >= lo && cp <= hi));
}

/** Whether Fontsource serves `family` as a Chinese, Japanese or Korean
 *  family (its subsets name the script). Fails when the API does not
 *  answer: a CJK face taken for a Latin one would paint in a system face. */
async function isCjkFamily(family) {
  const meta = await fontsourceMeta(family);
  if (!meta) throw new Error(`api.fontsource.org did not describe ${family}: reload to try again`);
  return !!meta.subsets?.some((subset) => /^(chinese|japanese|korean)/.test(subset));
}

/** faces = { 'Noto Serif TC': ['400', '700'] }, as for loadFonts: the
 *  whole FONTS object may be passed, its other families are left to
 *  loadFonts. Adds one FontFace per file of each CJK face with its
 *  unicodeRange, then loads the files `text` touches. `text` is what the
 *  faces set: the sample for the text face; a book in several voices calls
 *  it once per voice (loadCjkFonts({ 'LXGW WenKai TC': ['400'] }, quotes)),
 *  so the heading and quotation faces fetch and check only their own
 *  characters. Fails when a character of `text` is in no file of a face.
 *  List every weight the pages use: a weight left to buildWithFonts gets
 *  the latin file only. With { vertical: true } it also loads each
 *  family's vertical forms (brackets, quotes, pause marks) for the canvas,
 *  which needs loadVerticalAlternates imported from postext. Resolves to
 *  the number of files loaded. */
async function loadCjkFonts(faces, text, { vertical = false } = {}) {
  kitStatus('Loading fonts…');
  let loaded = 0;
  try {
    if (vertical && typeof loadVerticalAlternates !== 'function') {
      throw new Error('loadCjkFonts(…, { vertical: true }) needs loadVerticalAlternates imported from postext');
    }
    for (const [family, specs] of Object.entries(faces)) {
      if (!(await isCjkFamily(family))) continue;
      const twin = [];
      for (const spec of new Set(specs)) {
        const weight = parseInt(spec, 10);
        const style = spec.endsWith('i') ? 'italic' : 'normal';
        const slices = await cjkSlices(family, weight, style);
        const missing = [...new Set(text)].filter((ch) => /\S/.test(ch) && !cjkSliceFor(slices, ch.codePointAt(0)));
        if (missing.length) {
          throw new Error(`${family} ${spec} has no file for ${missing.slice(0, 12).join(' ')}: `
            + `give each face the text it sets (loadCjkFonts({ '${family}': ['${spec}'] }, text))`);
        }
        for (const slice of slices) {
          document.fonts.add(new FontFace(family, `url(${slice.url}) format('woff2')`,
            { weight: String(weight), style, unicodeRange: slice.range }));
          twin.push({ source: slice.url, weight: String(weight), style, unicodeRange: slice.range });
        }
        const font = `${style === 'italic' ? 'italic ' : ''}${weight} 16px "${family}"`;
        loaded += (await document.fonts.load(font, text)).length;
        if (!document.fonts.check(font, text)) throw new Error(`${family} ${spec} did not load for the sample`);
      }
      // The same files under a twin name with the `vert` feature on: the
      // canvas paints the punctuation of vertical lines with it.
      if (vertical && twin.length) await loadVerticalAlternates(family, twin);
    }
  } catch (error) {
    kitFail(error);
    throw error;
  }
  return loaded;
}

/** The PDF font provider for recipes with CJK faces: a family whose
 *  Fontsource subsets are Chinese, Japanese or Korean gets the files that
 *  hold the characters its pages set (`request.codePoints`); any other
 *  family gets the latin file fontsourceProvider fetches (the "pdf" block)
 *  and, when the face sets letters only latin-ext has, that file too. */
async function cjkPdfProvider(family, weight, style, request) {
  if (!(await isCjkFamily(family))) return cjkLatinPdfFiles(family, weight, style, request);
  const meta = await fontsourceMeta(family);
  const weights = meta.weights?.length ? meta.weights : [400, 700];
  const w = weights.reduce((a, b) => (Math.abs(b - weight) < Math.abs(a - weight) ? b : a));
  const s = style === 'italic' && !meta.styles.includes('italic') ? 'normal' : style;
  const slices = await cjkSlices(family, w, s);
  const picked = new Set();
  for (const cp of request?.codePoints ?? []) {
    const slice = cjkSliceFor(slices, cp);
    if (slice) picked.add(slice);
  }
  if (!picked.size) picked.add(slices[0]);
  return Promise.all(slices.filter((slice) => picked.has(slice)).map(async (slice) => {
    const res = await fetch(slice.url);
    if (!res.ok) throw new Error(`Fontsource file ${slice.url} (${res.status})`);
    return decompressWoff2(new Uint8Array(await res.arrayBuffer()));
  }));
}

/** A Latin family set next to the CJK faces: its latin file, then its
 *  latin-ext file when the face sets letters only latin-ext has (ō ū in
 *  Hepburn rōmaji, ǎ in pinyin), the file loadFonts adds on screen for
 *  them. Latin comes first: postext-pdf draws a character from the first
 *  file that has it, as the browser takes a character both files hold from
 *  latin. A face Fontsource ships without latin-ext, or whose file does
 *  not come, gets latin alone, and the PDF names the letters it lacks. */
async function cjkLatinPdfFiles(family, weight, style, request) {
  const meta = await fontsourceMeta(family);
  const beyond = [...(request?.codePoints ?? [])].some(cjkLatinExtOnly);
  if (!beyond || !meta?.subsets?.includes('latin-ext')) return fontsourceProvider(family, weight, style);
  const weights = meta.weights?.length ? meta.weights : [400, 700];
  const w = weights.reduce((a, b) => (Math.abs(b - weight) < Math.abs(a - weight) ? b : a));
  const s = style === 'italic' && !meta.styles.includes('italic') ? 'normal' : style;
  const id = fontsourceId(family);
  const url = `https://cdn.jsdelivr.net/npm/@fontsource/${id}@5/files/${id}-latin-ext-${w}-${s}.woff2`;
  const [latin, ext] = await Promise.all([fontsourceProvider(family, weight, style), fetch(url)
    .then(async (res) => (res.ok ? decompressWoff2(new Uint8Array(await res.arrayBuffer())) : null), () => null)]);
  return ext ? [latin, ext] : latin;
}

/** Whether code point `cp` is in Fontsource's latin-ext file and not in
 *  its latin file: Latin Extended-A and -B, IPA, the spacing modifiers and
 *  Latin Extended Additional (loadFonts's test for latin-ext), less the
 *  few latin holds too (ı Œ œ ʻ ʼ ˆ ˚ ˜). */
function cjkLatinExtOnly(cp) {
  if (!((cp >= 0x100 && cp <= 0x2ff) || (cp >= 0x1e00 && cp <= 0x1eff))) return false;
  return ![0x131, 0x152, 0x153, 0x2bb, 0x2bc, 0x2c6, 0x2da, 0x2dc].includes(cp);
}

/** showPages for a book bound on either edge. A right-bound book (the
 *  document says so: doc.binding is 'right' for page.binding 'right' and
 *  for vertical text) lies on the desk as it opens: page 1 alone on the
 *  left of the spine, then [3 | 2], the spine shade on each page's inner
 *  edge. `binding` ('left' | 'right') overrides the document's. */
function showBook(docs, { binding, ...options } = {}) {
  const count = showPages(docs, options);
  const right = (binding ?? [docs].flat()[0]?.binding) === 'right';
  if (!document.getElementById('pt-kit-cjk')) {
    // The pages keep direction ltr: a canvas draws text in the direction its
    // element inherits, and under rtl each run would end where the engine
    // starts it, its brackets mirrored.
    document.head.insertAdjacentHTML('beforeend', `<style id="pt-kit-cjk">
      .pt-spread[dir="rtl"] canvas { direction: ltr; }
      .pt-spread[dir="rtl"] figure:first-child canvas { box-shadow: inset 14px 0 14px -14px rgb(0 0 0 / .18),
        0 1px 2px rgb(0 0 0 / .5), 0 22px 44px -16px rgb(0 0 0 / .8); }
    </style>`);
  }
  // Each pair stays [verso, recto] in the page; right to left, the verso
  // sits on the right. Phones stack the pages in reading order either way.
  for (const spread of document.querySelectorAll('#pages > .pt-spread')) spread.dir = right ? 'rtl' : 'ltr';
  document.getElementById('pages').dataset.binding = right ? 'right' : 'left';
  return count;
}

// ─── Kit · arabic v1 ── Arabic-script faces · postext.dev/cookbook
// Fontsource ships an Arabic family as one file per subset and weight: the
// `arabic` file holds the letters, the harakat, the Arabic-Indic digits, the
// Arabic punctuation and the presentation forms; `latin` and `latin-ext`
// hold the rest. loadFonts loads the latin files; this block adds the arabic
// file of every Arabic family, for the canvas and for the PDF, which shapes
// the letters with HarfBuzz from the same bytes.

/** The code points of Fontsource's `arabic` subset, as its stylesheets
 *  declare them (the same unicode-range the browser picks the file by). A
 *  function, not a const: the kit is inlined after the recipe's top-level
 *  awaits, and a const read before its line throws, where a function
 *  declaration is hoisted. */
function arabicRange() {
  return 'U+0600-06FF,U+0750-077F,U+0870-088E,U+0890-0891,U+0897-08E1,U+08E3-08FF,'
    + 'U+200C-200E,U+2010-2011,U+204F,U+2E41,U+FB50-FDFF,U+FE70-FE74,U+FE76-FEFC,U+102E0-102FB,'
    + 'U+10E60-10E7E,U+10EC2-10EC4,U+10EFC-10EFF,U+1EE00-1EEFF';
}

/** Whether code point `cp` is in the arabic file. */
function inArabicRange(cp) {
  inArabicRange.ranges ??= arabicRange().split(',').map((part) => {
    const [lo, hi = lo] = part.slice(2).split('-');
    return [parseInt(lo, 16), parseInt(hi, 16)];
  });
  return inArabicRange.ranges.some(([lo, hi]) => cp >= lo && cp <= hi);
}

/** Whether Fontsource serves `family` with an `arabic` subset. Fails when
 *  the API does not answer: an Arabic face taken for a Latin one would set
 *  its letters in a system face. */
async function isArabicFamily(family) {
  const meta = await fontsourceMeta(family);
  if (!meta) throw new Error(`api.fontsource.org did not describe ${family}: reload to try again`);
  return !!meta.subsets?.includes('arabic');
}

/** The arabic file of a face. */
function arabicFileUrl(family, weight, style) {
  const id = fontsourceId(family);
  return `https://cdn.jsdelivr.net/npm/@fontsource/${id}@5/files/${id}-arabic-${weight}-${style}.woff2`;
}

/** faces = { Amiri: ['400', '700'] }, as for loadFonts, after it: the whole
 *  FONTS object may be passed, its families without an arabic subset are
 *  left alone. Adds the arabic file of every listed weight of each Arabic
 *  family (the latin files come from loadFonts) and loads it. `text` is
 *  the sample: fails when it holds an Arabic-script character the arabic
 *  file does not cover. List every weight the pages set in Arabic: a weight
 *  left to buildWithFonts gets the latin file only, and its Arabic letters
 *  fall back to a system face. Resolves to the number of files loaded. */
async function loadArabicFonts(faces, text = '') {
  kitStatus('Loading fonts…');
  let loaded = 0;
  try {
    const outside = [...new Set(text)].filter((ch) => /\p{Script=Arabic}/u.test(ch) && !inArabicRange(ch.codePointAt(0)));
    if (outside.length) throw new Error(`Fontsource's arabic files have no ${outside.slice(0, 12).join(' ')}`);
    for (const [family, specs] of Object.entries(faces)) {
      if (!(await isArabicFamily(family))) continue;
      for (const spec of new Set(specs)) {
        const weight = parseInt(spec, 10);
        const style = spec.endsWith('i') ? 'italic' : 'normal';
        const face = new FontFace(family, `url(${arabicFileUrl(family, weight, style)}) format('woff2')`,
          { weight: String(weight), style, unicodeRange: arabicRange() });
        document.fonts.add(await face.load().catch(() => {
          throw new Error(`Fontsource has no arabic file for ${family} ${weight} ${style}`);
        }));
        loaded++;
      }
    }
  } catch (error) {
    kitFail(error);
    throw error;
  }
  return loaded;
}

/** The PDF font provider for recipes with Arabic faces: a family with an
 *  arabic subset gets its arabic file when its pages set Arabic letters
 *  (`request.codePoints`), then its latin file, and its latin-ext file for
 *  the letters beyond latin (transliteration: ā ḥ ʿ). The arabic file comes
 *  first: it also holds the space and the brackets, so a line of Arabic is
 *  shaped as one run and not cut at every space. Any other family goes to
 *  fontsourceProvider (the "pdf" block). */
async function arabicPdfProvider(family, weight, style, request) {
  if (!(await isArabicFamily(family))) return fontsourceProvider(family, weight, style, request);
  const meta = await fontsourceMeta(family);
  const weights = meta.weights?.length ? meta.weights : [400, 700];
  const w = weights.reduce((a, b) => (Math.abs(b - weight) < Math.abs(a - weight) ? b : a));
  const s = style === 'italic' && !meta.styles.includes('italic') ? 'normal' : style;
  const wanted = [...(request?.codePoints ?? [])];
  const id = fontsourceId(family);
  const urls = [];
  if (!wanted.length || wanted.some(inArabicRange)) urls.push(arabicFileUrl(family, w, s));
  urls.push(`https://cdn.jsdelivr.net/npm/@fontsource/${id}@5/files/${id}-latin-${w}-${s}.woff2`);
  if (meta.subsets.includes('latin-ext') && wanted.some((cp) => /[Ā-˿Ḁ-ỿ]/u.test(String.fromCodePoint(cp)))) {
    urls.push(`https://cdn.jsdelivr.net/npm/@fontsource/${id}@5/files/${id}-latin-ext-${w}-${s}.woff2`);
  }
  return Promise.all(urls.map(async (url) => {
    const res = await fetch(url);
    if (!res.ok) throw new Error(`Fontsource file ${url} (${res.status})`);
    return decompressWoff2(new Uint8Array(await res.arrayBuffer()));
  }));
}

// ─── Kit · comics v1 ── comic pages · postext.dev/cookbook
// The engine letters a comic in a face per language (defaultComicFont:
// Comic Neue, Zen Antique for Japanese, Noto Sans SC, LXGW WenKai TC,
// Playpen Sans Arabic; defaultComicSfxFont: Bangers, Dela Gothic One,
// ZCOOL KuaiLe, Lalezar) and asks for the bold of a shout or a sound effect
// and the italic of an inner voice. Most of these faces ship one weight and
// no italic: this block declares the file Fontsource does ship for those
// variants, so the canvas measures and paints the letters the PDF embeds
// (the providers snap to the shipped file) and not a bold or a slant the
// browser makes up. It also turns the art manifest into panel resources.

/** faces = { 'Comic Neue': ['400', '700'], Bangers: ['400'] }, as for
 *  loadFonts, after it (and after loadCjkFonts or loadArabicFonts for the
 *  faces of those scripts); the whole FONTS object may be passed. List in
 *  FONTS only what Fontsource ships (Bangers: ['400']): loadFonts fails on
 *  the rest. For each family, the regular, bold, italic and bold italic it
 *  lacks are declared with its nearest file (the regular for the bold, the
 *  upright for the italic) and loaded for `text`. A CJK face needs the cjk
 *  block; an Arabic face setting Arabic, the arabic block. Resolves to the
 *  number of variants added. */
async function loadComicFonts(faces, text = '') {
  kitStatus('Loading fonts…');
  let added = 0;
  try {
    for (const family of Object.keys(faces)) {
      const meta = await fontsourceMeta(family);
      if (!meta) throw new Error(`api.fontsource.org did not describe ${family}: reload to try again`);
      const weights = meta.weights?.length ? meta.weights : [400, 700];
      const styles = meta.styles?.length ? meta.styles : ['normal'];
      for (const [weight, style] of [[400, 'normal'], [700, 'normal'], [400, 'italic'], [700, 'italic']]) {
        if ((weights.includes(weight) && styles.includes(style)) || hasFace(family, weight, style)) continue;
        const w = weights.reduce((a, b) => (Math.abs(b - weight) < Math.abs(a - weight) ? b : a));
        const s = style === 'italic' && styles.includes('italic') ? 'italic' : 'normal';
        for (const { url, range } of await comicFaceFiles(family, w, s, meta, text)) {
          document.fonts.add(new FontFace(family, `url(${url}) format('woff2')`,
            { weight: String(weight), style, unicodeRange: range }));
        }
        await document.fonts.load(`${style === 'italic' ? 'italic ' : ''}${weight} 16px "${family}"`, text || 'A');
        added++;
      }
    }
  } catch (error) {
    kitFail(error);
    throw error;
  }
  return added;
}

/** The files of a shipped face ({ url, range }): a CJK face's slices (the
 *  cjk block reads them from its stylesheet), else latin, the latin-ext
 *  and greek files `text` needs, and the arabic file when `text` holds
 *  Arabic. */
async function comicFaceFiles(family, weight, style, meta, text) {
  if (meta.subsets?.some((subset) => /^(chinese|japanese|korean)/.test(subset))) {
    if (typeof cjkSlices !== 'function') throw new Error(`${family} is a CJK face: list the cjk kit block`);
    return (await cjkSlices(family, weight, style)).map(({ url, range }) => ({ url, range }));
  }
  const id = fontsourceId(family);
  const file = (subset) => `https://cdn.jsdelivr.net/npm/@fontsource/${id}@5/files/${id}-${subset}-${weight}-${style}.woff2`;
  const files = ['latin', ...kitSubsetsFor(text, meta)].map((subset) => ({ url: file(subset), range: comicRange(subset) }));
  if (meta.subsets?.includes('arabic') && /\p{Script=Arabic}/u.test(text)) {
    if (typeof arabicRange !== 'function') throw new Error(`${family} sets Arabic: list the arabic kit block`);
    files.unshift({ url: file('arabic'), range: arabicRange() });
  }
  return files;
}

/** The unicode-range loadFonts gives a Fontsource file. A function, not a
 *  const: the kit is inlined after the recipe's top-level awaits. */
function comicRange(subset) {
  return {
    latin: 'U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,'
      + 'U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD',
    'latin-ext': 'U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,'
      + 'U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF',
    greek: 'U+0370-03FF',
  }[subset];
}

/** The PDF font provider of a comic in any script: a CJK face goes to
 *  cjkPdfProvider, an Arabic face to arabicPdfProvider, any other to
 *  fontsourceProvider (the "pdf" block). Each embeds the shipped weight
 *  and style nearest to the one asked for, the file loadComicFonts
 *  declared for the canvas. */
async function comicPdfProvider(family, weight, style, request) {
  const subsets = (await fontsourceMeta(family))?.subsets ?? [];
  if (subsets.some((subset) => /^(chinese|japanese|korean)/.test(subset))) {
    if (typeof cjkPdfProvider !== 'function') throw new Error(`${family} is a CJK face: list the cjk kit block`);
    return cjkPdfProvider(family, weight, style, request);
  }
  if (subsets.includes('arabic') && typeof arabicPdfProvider === 'function') {
    return arabicPdfProvider(family, weight, style, request);
  }
  return fontsourceProvider(family, weight, style, request);
}

/** A panel picture as a resource for art= (and pop=): loads `url`
 *  (write asset('lh-arrive.jpg') in the call, so the lint checks the file)
 *  and declares it with `meta`, its entry in the art manifest:
 *  { width, height, alt, safeArea, anchors, avoid }. The safe area is what
 *  every crop keeps, the anchors the speakers' mouths, heads and faces,
 *  the avoid zones what no balloon covers; all in fractions of the picture,
 *  the same in every language. Without width and height, the picture's own
 *  size. Needs the images block. Resolves to the resource. */
async function comicPanel(id, url, meta = {}) {
  const fileId = decodeURIComponent(url.split('/').pop());
  await loadImage(fileId, url);
  let { width, height } = meta;
  if (!width || !height) {
    const bitmap = await createImageBitmap(new Blob([imageBytes(fileId)]));
    ({ width, height } = bitmap);
    bitmap.close();
  }
  return {
    id, typeId: meta.typeId ?? 'figure', kind: 'bitmap', createdAt: 0, updatedAt: 0,
    bitmap: { fileId, format: /\.png$/i.test(fileId) ? 'png' : 'jpeg', width, height },
    ...(meta.alt && { altText: meta.alt }),
    ...(meta.safeArea && { safeArea: meta.safeArea }),
    ...(meta.anchors?.length && { anchors: meta.anchors }),
    ...(meta.avoid?.length && { avoid: meta.avoid }),
  };
}

// ─── /Kit ───────────────────────────────────────────────────────────────────────
```

## Variantes

### Refleja los dibujos en las ediciones de derecha a izquierda

`mirrorArt: true` da la vuelta a cada dibujo cuando la página se lee en sentido contrario al del dibujo. Deja sin reflejar una viñeta con letras o un reloj con `::panel{mirror=false}`.

```diff
   readingDirection: 'auto', // the default, written out: it is what an edition flips
+  mirrorArt: true,
```

## Errores frecuentes

- **Carga todas las fuentes antes de componer.** La composición mide el texto con las fuentes que el navegador ha cargado y guarda los anchos, así que una fuente que llega después de la primera composición deja cortes de línea erróneos y un PDF que ya no coincide con la pantalla. Carga antes todos los pesos y estilos, y llama a clearMeasurementCache() antes de recomponer si alguna llega tarde.
- **Una configuración se cachea por identidad: crea un objeto nuevo.** El motor guarda en caché las configuraciones resueltas según la identidad del objeto, así que modificar el mismo objeto y volver a componer reutiliza el resultado anterior. Crea un objeto nuevo en cada composición: por eso la configuración de una receta es una función, config().

- Una línea del guion nombra al personaje por su id, no por su nombre: escribe `maya:` en todos los idiomas. El nombre que anuncia un lector de pantalla es `cast[].name`.
- La página francesa comparte los dibujos de la edición, así que el texto alternativo de sus viñetas está en el idioma de la edición; escribe `::panel{alt="…"}` en `content.fr.en.md` si lo quieres en francés.

## Créditos

- Receta: Ignacio Ferro ([@drnachio](https://github.com/drnachio))
- Texto: La radio del faro, una historieta de una página escrita para esta receta en inglés, español, francés, japonés, chino y árabe: Postext Cookbook, CC-BY-4.0
- Imágenes: Una niña con chubasquero amarillo sube por un camino de la costa hacia un faro rojo y blanco, con un gato naranja gordo delante; se acercan nubes de tormenta sobre el mar.: Generated With Diffusion Models, original
- Imágenes: El viejo farero, de barba blanca, jersey azul marino y gorra, golpea una radio de válvulas en la sala de la linterna, micrófono en mano; la gran lente brilla a su lado.: Generated With Diffusion Models, original
- Imágenes: Primer plano de Maya, ceñuda, señalando el suelo.: Generated With Diffusion Models, original
- Imágenes: Bajo la mesa, el gato naranja duerme panza arriba sobre el cable negro de la radio y lo aplasta.: Generated With Diffusion Models, original
- Imágenes: De noche, el haz del faro barre un mar oscuro; Maya y su abuelo están en la galería de la linterna y, a lo lejos, un pesquero enciende sus luces.: Generated With Diffusion Models, original
- Tipografías: Comic Neue (OFL-1.1), Bangers (OFL-1.1), Zen Antique (OFL-1.1), Dela Gothic One (OFL-1.1), Noto Sans SC (OFL-1.1), ZCOOL KuaiLe (OFL-1.1), Playpen Sans Arabic (OFL-1.1), Lalezar (OFL-1.1)
- Código: MIT · Contenido de ejemplo: CC-BY-4.0

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