noun, noun or participle which takes 'suru', transitive verb
writing in red; red-ink writing
Refers to the act of writing in red ink or the resulting red text, often used in contexts like corrections, annotations, or official seals.
答案を朱書で添削する。
Correct the exam paper in red ink.
契約書に朱書で注意書きを入れ
I added a note in red on the contract.