Comments are a useful way to communicate with other team members, mental reminders for the future, document changes from Client discussions or take notes that can be collated into a Data Studio report.
Whenever a notification is sent to one of your Slack channels, there will be a "Add Comment" button that will open the comment modal.
From the comment modal you are able to fetch the latest comments by clicking the button at the top. If there is any formatting on the comments being fetched this will be stripped out.
When leaving a comment there is an optional checkbox to save it as a note. Notes are useful if you would like to apply some sort of logic to different types of comments, please see this article for more information.
Mentions of other users and rich formatting of comments are not support within Slack, so if you need to utilise these features please login to the App to add a comment.