Original SVG drawings and layout use DejaVu Sans from the installed Debian font package. Generated PDFs contain selectable text with this font. The package licence/copyright notice is copied in FONT-LICENSE.txt. Its terms remain separate from SubjectNest's CC BY 4.0 content licence. No font file is bundled. PDF pages are untagged; exact visible-word and diagram companions in TEXT-ALTERNATIVES.md provide a separate linear route, not accessibility certification.