---
name: valid-library-reference
description: Documents libraries without declaring them as skill routes.
metadata:
  version: "1.0.0"
  tags: "fixture, validation"
---

# Library Reference Fixture

Use `react-window` for virtualization.
Use @custom-variant for a CSS selector.
For example, a `pdf-editor` skill could rotate PDFs.

- `react-window` for large lists

```markdown
Use the `example-only` skill.
```