ETYM Cf. Old Fren. comment.
A written explanation or criticism or illustration that is added to a book or other textual material; SYN. commentary.

Text embedded in a program for documentation purposes. Comments usually describe what the program does, who wrote it, why it was changed, and so on. Most programming languages have a syntax for creating comments so that they can be recognized and ignored by the compiler or assembler. Also called: remark. See also comment out.

ETYM Archaic.
1. To explain or interpret something.
2. To make or write comment to make a comment on; SYN. notice, remark, point out.