The canonical behavioural-icon family — one glyph per FRINGE role and per Designation character. Same construction as the UI set: 24px grid, 1.5px stroke, single weight, currentColor. Locked 2026-06-01.
threedoors-wiki/marketing/brand/design-system/ — FRINGE (#fr-*) in icons.svg + sprites.js; Designation (#dsg-*) in designation-icons.svg.
To change one: edit the wiki source, run marketing/brand/_build-assets.py (mirrors to threedoors-web/public/brand/design-system/), then refresh the inline copy on this page.
Public mirror: threedoors.co.uk/brand/design-system/.
<!-- FRINGE lives in the global sprite (sprites.js / icons.svg) --> <svg class="icon" width="24" height="24"><use href="#fr-flip"/></svg>
<!-- Designation lives in its own sprite (external reference, not the global head) --> <svg class="icon" width="24" height="24"><use href="/brand/design-system/designation-icons.svg#dsg-fixer"/></svg>
FRINGE (6) then Designation (15) — legibility + family coherence check.