The REMARK command is used to place comments in a SQL*Plus script.
For example:
REM This script written by Justin Nue.
The comment_text is your comment.
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month, and much more.