annotate statement "comment-string"
Add comments to a configuration. You can add comments only at the current hierarchy level.
Any comments you add appear only when you view the configuration by entering the show command in configuration mode or the show configuration command in operational mode.
comment-string—Text of the comment. You must enclose it in quotation marks. In the comment string, you can include the comment delimiters /* */ or #. If you do not specify any, the comment string is enclosed with the /* */ comment delimiters. If a comment for the specified statement already exists, it is deleted and replaced with the new comment.
statement—Statement to which you are attaching the comment.
See Add Comments in a Configuration.
configure—To enter configuration mode; other required privilege levels depend on where the statement is located in the configuration hierarchy.
See the description statement in the JUNOS Internet Software Configuration Guide: Interfaces and Chassis.