There are a few ways to add a comment on an item in your project (such as a task, milestone, file, notebook or link).
On the details page for an individual item
Click on the comment box at the bottom of page:
In the quick view overlay of an item
Click on the comment box under the item details:
Formatting and other options
When you click to add a comment using any of the methods above, you'll see the message editor screen:
You can use the formatting toolbar to style the text in your comment and add images or links.
If you use the '@name' mention option within the comment, that person will automatically be added to the notify option:
Under the editor, you can select who to notify of your comment, you can attach files, and if there isn't already a privacy setting on the item you're commenting on, you can choose who the comment should be
If you have lots of comments and want to link to a comment directly, you can do so by using the Permalink feature. By clicking the link button on the left you will get a direct link to the comment that can be shared or linked to on a Notebook or Message
Administrators can delete comments created by anyone. Everyone else can delete their own comments within 15 minutes of adding them.