ATTRIBUTIONS

Third-party components

Third-Party Notices

The Sonsteng Magnum Opus platform is licensed under the MIT License (© 2026 Damien Riehl / Sonsteng Practicum). It bundles the following third-party assets. Each is embedded (base64) so the platform makes zero external network requests at runtime.

Fonts

All three type families ship under the SIL Open Font License 1.1 (<https://openfontlicense.org>). The OFL permits bundling and embedding; the reserved font names below are preserved.

Fraunces

• Role: Display / headings
• License: SIL Open Font License 1.1
• Authors: Phaéton (Undercase Type) — Flavia Zimbardi & Phil Eaton
• Source: <https://github.com/undercasetype/Fraunces>
• Embedded: weights 400 / 600 / 900 (normal), woff2, in site/platform/assets/fonts.css

Spectral

• Role: Body text, italics for stage directions & witness quotes
• License: SIL Open Font License 1.1
• Authors: Production Type — Emmanuel Besse & the Spectral project
• Source: <https://github.com/productiontype/Spectral>
• Embedded: weights 400 / 500 / 600 (normal), woff2, in site/platform/assets/fonts.css

Fragment Mono

• Role: Instrument / machine voice (FOLIO IRIs, disclosure meters, turn

counters, rubric point-weights, ledger math, timestamps, tags)

• License: SIL Open Font License 1.1
• Author: Wei Huang
• Source: <https://github.com/weiweihuanghuang/fragment-mono>

(via Google Fonts: <https://fonts.google.com/specimen/Fragment+Mono>)

• Embedded: weight 400 normal + 400 italic, Latin subset, woff2, in site/platform/assets/fonts.css
• Note: Fragment Mono is the embedded mono per the design contract.

The documented fallback (Spline Sans Mono, also OFL) was not needed — the Fragment Mono download succeeded.

SIL Open Font License 1.1 — summary of obligations met

• The fonts are bundled with the software (permitted).
• Reserved Font Names (Fraunces, Spectral, Fragment Mono) are not used to

name derivative/modified fonts — the faces are embedded unmodified.

• The full OFL text accompanies each upstream project (linked above) and

applies to the embedded binaries.