---
category: Foundations
---

The tracked uppercase micro-label. Two registers, and they are **not**
interchangeable: `micro` tracks `--track-caps-micro` (+0.175em) at 12px, `control`
tracks `--track-caps-control` (+0.06em) at 14px.

The threefold difference is measured, and the reference's own `--tracking-caps` token
describes only the second. Collapsing them to one value is how the eyebrows stop
reading as eyebrows.

Above a section head. Never inside a control — that is what `control` register is
for, and `Button` already applies it.

```tsx
<Eyebrow>See sample report</Eyebrow>
```