annotator; commentator
Refers to a person who adds explanatory notes or commentary to a text, such as in academic, literary, or editorial contexts.
The annotator of this classic text adds detailed explanations to difficult passages.
Standard modern spelling.
Variant using the older 註 kanji; less common in contemporary writing.
Compound of 注釈 (annotation) + 者 (person). The spelling 註釈 uses the older form of 注, but the meaning is identical.