# Current working spine > Mode lets Design Engineers snapshot a product screen, design on an ai visual canvas, share the result as a live prototype, and create a merge-ready PR for engineering review. ## Why this is the current lead This version centers the concrete product loop and the category phrase **Design in code**: designing against the product codebase without making the designer touch code. 1. **Snapshot** a product screen. 2. **Design** on an ai visual canvas. 3. **Share** the result as a live prototype. 4. **Create** a merge-ready PR for engineering review. It keeps the designer experience visual while making the engineering output explicit: merge-ready PRs written in the codebase's existing patterns. ## Guardrail `PR` means merge-ready code for engineering review. It does not mean designers bypass engineering or ship directly to production.