# 09 · Iconography

**PRINCIPLE** — Line icons that match the plan line.

**RULE** — 24 px grid, 1.6 px stroke, round caps, no fills; sizes 16/20/24/32/48. Plans for services, icons for UI actions.

**WHEN TO USE** — UI, chips, spec cells, wayfinding.

**WHEN NOT TO USE** — As illustration or decoration on posts.

**DO**
- Pair icons with labels
- Use one icon set only

**DON’T**
- Filled/duotone icons
- Emoji in brand artwork

**EXAMPLE** — See board Visual language (06), UI (16).