These lines can curve to follow the form, and multiples sets of hatched lines might go in different directions to indicate the shifting planes of the form being rendered. Multiple sets of hatched lines going in different directions might also overlap each other to create texture (cross-hatching.) The quality of the individual lines can vary greatly, from fine to broad, from controlled to unevenly spaced and shaky, and from short to long, but the rhythmic nature of hatching can provide both a sense of order and liveliness.

Featured: Portrait of the Postman Joseph Roulin by Vincent Van Gogh.