In the first place, the etched lines must be distinguished from the drypoint lines applied at a later stage.
This enables a drypoint needle to move freely in any direction without encountering the resistance of a grain.
He then added the single small figure of the shepherd boy entirely in drypoint.
The drypoint line, by its nature, is more abrupt and forceful, showing the quality of having been scratched rather than drawn.
The rich fuzzy line produced by the burr is what we most typically associate with drypoint work.
There are two basic drypoint lines, depending upon the position in which the drypoint needle is held.
Rembrandt's use of drypoint is, as Jakob Rosenberg says, "the most important innovation in Rembrandt's mature graphic work."
A similar result in the cross-hatching at the lower left is caused instead by drypoint lines crossing etched lines.