Ask HN: Developers, how do you like your wireframes?

Wireframes are delivered from designers to developers for them to code the product. How do you developers like your wireframes to make it easiest for you to understand?

Note: Wireframes are typically grayscale designs that communicate the UI structure and flow. They are NOT visual mockups intended to communicate graphical art, effects, colors, typography and etc.

1. UI sketches with paper and pencil

2. Digital wireframe document with the sketchy line look

3. Digital wireframe document with annotations

4. Digital wireframe document without annotations

5. Click-through prototype of the UI screens