Comments allow you to start discussions in any place of the board. To create a comment click Comment (or press C on the keyboard). Click the spot where you would like to post it, type in the comment, mention someone if needed and click Post Comment. After you've posted a comment, other participants can add their thoughts to the thread.
In the comment dialog box, there are options to minimize, pin (leave open for the current session), change color and delete the comment.
Comments can be attached to other objects by posting on top of them:
Adding a comment on a sticky note
You can also choose the color of a comment, for instance, to make important threads pop:
Three colors are available for comments
Get notified about new mentions and comments right on the board with the comments feed, located in the bottom left corner of the board. This panel displays all your mentions and comments in one place and allows you to see instant notifications when someone leaves a comment or mentions you.
You can mark any comment thread as Resolved and focus your attention where it’s most needed.
Resolve a comment thread
If you want your resolved comments to be visible on the board, just choose Show resolved option in the Comment feed.
Show resolved comments
To hide comments on your board click Hide comments button