You can add comments as notes to provide any technical information to the support reps related to the article in itself. You can leave multiple comments for an article.
To add a comment, do the following:
You can also choose to display the comment in the self-service portal.
You can attach any type of files and any number of files to a an article.
To attach a file, do the following:
You can also choose to show an attachment to your customers in their self-service portal.