Font Reference and Maintenance¶
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This reference owns the bundled font files, their LaTeX mappings, and font-specific maintenance requirements. Directory locations are indexed in LATEX.md; exact release attribution and legal notices remain in FONT-LICENSE.md.
Font system¶
Bundled OpenType files keep canonical builds independent of host-installed fonts. The shared components load them automatically; course authors use semantic LaTeX commands rather than choosing files directly.
| Family | Role |
|---|---|
| Libertinus Serif | Body text and long-form academic content. |
| Libertinus Math | Mathematical notation and symbols. |
| Source Sans 3 | Headings, captions, labels, navigation, and structural text. |
| IBM Plex Mono | Code, terminal output, paths, commands, and technical identifiers. |
Font catalogue¶
| Family | File | Primary role |
|---|---|---|
| Libertinus Math | LibertinusMath-Regular.otf |
Mathematical equations, operators, and symbols. |
| Libertinus Serif | LibertinusSerif-Regular.otf |
Normal paragraphs and long-form text. |
| Libertinus Serif | LibertinusSerif-Italic.otf |
Emphasis and italic academic text. |
| Libertinus Serif | LibertinusSerif-SemiboldItalic.otf |
Face mapped to bold italic body text. |
| Libertinus Serif | LibertinusSerif-Bold.otf |
Strong body-text emphasis. |
| Source Sans 3 | SourceSans3-Regular.otf |
Captions, labels, headers, footers, and structural text. |
| Source Sans 3 | SourceSans3-It.otf |
Italic sans-serif text. |
| Source Sans 3 | SourceSans3-Semibold.otf |
Subheadings and medium-emphasis structure. |
| Source Sans 3 | SourceSans3-Bold.otf |
Chapter titles, section headings, and prominent labels. |
| IBM Plex Mono | IBMPlexMono-Regular.otf |
Code, terminal sessions, filenames, paths, and identifiers. |
| IBM Plex Mono | IBMPlexMono-Italic.otf |
Italic monospaced emphasis. |
| IBM Plex Mono | IBMPlexMono-Medium.otf |
Programming-language keywords and medium emphasis. |
| IBM Plex Mono | IBMPlexMono-Bold.otf |
Strong monospaced emphasis. |
LaTeX mapping¶
typography.sty configures text families through fontspec; mathematics.sty configures Libertinus Math through unicode-math.
| LaTeX interface | Font family |
|---|---|
Normal text and \rmfamily |
Libertinus Serif |
| Mathematics | Libertinus Math |
\sffamily |
Source Sans 3 |
\ttfamily and \texttt |
IBM Plex Mono |
Bold italic serif text uses the bundled Libertinus Semibold Italic face. Bold italic sans-serif and monospace text use their bold faces with FakeSlant=0.2, not system-font fallbacks. Separate semibold sans-serif and medium monospace commands support subheadings and listing keywords.
Font requirements¶
Keep each file inside its designated family directory with the filename expected by the shared configuration. Load it through the shared font-path definitions, give it a clear typographic role, and preserve compatibility with the class's LuaLaTeX engine.
Do not substitute host-local fonts for canonical builds: different metrics can change line breaks, pagination, and generated PDFs. No unrelated files belong inside a font-family directory.
Changing the font system¶
- Update the relevant font-family directory and its loader in
typography.styormathematics.sty. - Update this catalogue and mappings, and preserve the exact-release notices required by FONT-LICENSE.md.
- Follow Building documents for canonical compilation, PDF review, and generated-state verification. Font changes affect the complete document set under the selection rules.
During visual review, pay particular attention to glyph identity and coverage, regular/italic/bold weights, code indentation, mathematical symbols, and changes to text wrapping or pagination in both languages. Automated builds do not replace that font-specific inspection.