Question: What are code points in the range U+D800-U+DBFF known as?
Sentence: Code points in the range U+D800–U+DBFF (1,024 code points) are known as high-surrogate code points, and code points in the range U+DC00–U+DFFF (1,024 code points) are known as low-surrogate code points.
Answer in sentence: yes