Final answer:
Snape's handwriting during his O.W.L. exam is described as elegant and precise, showcasing his attention to detail and skill as a scribe.
Step-by-step explanation:
In the Harry Potter series, Snape's handwriting is described during his O.W.L. exam as elegant and precise (“regularity and precision of the penmanship”). This reveals his skill and attention to detail as a scribe. Each pen stroke and proportion was carefully memorized and produced during his training as a scribe.