Seventy-Two Seats (七十二个座位) — Isometric Picture Book (Lemo-Opuscar) · LemoLab × Claude Opus 5.5

IMAGES, FOOTAGE, MODELS
- None. The apron, terminal, jet bridge, aircraft, cabin, people and every mark are drawn in code (engine.js, kit.js,
  plane.js, places.js, film.js). No photographs, no scans, no AI-generated images, no 3D models.
- engine.js is the iso engine of the library's Isometric Infographic demo (MIT License, Copyright (c) 2026 LemoLab).

FONTS (SIL Open Font License 1.1, licence texts in fonts/; not in git, build.sh downloads them from github.com/google/fonts)
- Noto Serif SC (variable, NotoSerifSC[wght].ttf) — Google / Adobe (Chinese type and subtitles), subset by tools/subset.py
  to the characters the film uses (fonts/NotoSerifSC-sub.ttf)
  fonts/OFL-NotoSerifSC.txt
- Newsreader (variable, Newsreader[opsz,wght].ttf) — Production Type (Latin type, numbers, English subtitles)
  fonts/OFL-Newsreader.txt

NARRATION
- Text written for this film (lines.json, lines_en.json). Voices synthesised with Microsoft edge-tts
  (zh-CN-XiaoxiaoNeural; en-US-AvaNeural for the English version), an online service: check Microsoft's terms before
  commercial use. build.sh generates them; the audio is not in git.

MUSIC & SOUND
- Original score and sound design written for this film in audio.py: sampled instruments played through the library's
  core/audio/sampler.py (upright piano, grand piano, vibraphone, glockenspiel, harp, cellos, contrabass pizzicato,
  violins pizzicato, shaker) and synthesis through core/audio/sfx.py (jet whine, brakes, chime, wheels, bin lids,
  paper flap, clock ticks, tug, beds of air).
- Piano: "Salamander Grand Piano V3" by Alexander Holm, licensed under CC BY 3.0 (https://creativecommons.org/licenses/by/3.0/).
- Samples (CC0): VS Chamber Orchestra: Community Edition (Versilian Studios), Versilian Community Sample Library
  (Versilian Studios). Downloaded with sh tools/fetch.sh instruments vsco2ce | vcsl | salamander.

FACTS
- Steffen & Hotchkiss (2012), Journal of Air Transport Management 18(1): 64–67. Every number in the film: FACTS.md.
