A technique for creating tonal or shading effects with closely spaced parallel lines. Artists typically use hatching in pencil and pen drawing, silverpoint, drypoint, etching and engraving. When more such lines are placed at an angle across the first, it is called crosshatching.

Rembrandt van Rijn. Self-portrait in a Heavy Fur Cap: Bust. Etching. 1631. Morgan Library and Museum, New York.