Sketch Mode adds lightweight text boxes and basic blocks (notes, arrows, quick steps, simple shapes) for fast, unstructured ideation on the canvas, with one‑click conversion into Puzzle blocks (Step, Section, Tool, Role, Data Point) that preserves content.

This reduces early‑stage friction, keeps brainstorming inside Puzzle instead of tools like Excalidraw, and improves documentation by letting users capture rough ideas first and formalize later