Comments are how conversations happen on a card. You can leave updates for the team, ask questions, share decisions, and tag members so they get notified. This article covers how to add a comment, the keyboard shortcut to submit it, formatting with Markdown, and @-mentioning members.
Where comments live
Open any card and look for the Activity section. There are two tabs: Comments and Card history. Comments are on the Comments tab. Card history is a separate, automatic log of changes to the card and is covered in a separate article.
Add a comment
Open a card.
Click the comment box under Activity → Comments.
Type your message.
Click Save, or press Ctrl+Enter (Windows and Linux) or Cmd+Enter (Mac) to submit.
Click Cancel to discard a comment you started typing.
Submit with a keyboard shortcut
You don't have to reach for the mouse to post a comment. Press Ctrl+Enter (Windows and Linux) or Cmd+Enter (Mac) while the comment box is focused, and Placker submits the comment.
A few things to know:
Plain Enter still inserts a newline. The shortcut only submits when you hold Ctrl or Cmd.
If the comment box is empty, the shortcut closes the box instead of submitting an empty comment.
The same shortcut works when you're editing an existing comment. It saves the change.
Format your comment with Markdown
Comments support Markdown, so you can add structure without leaving the keyboard. The hint under the comment box says "You can use Markdown and @ mention members in your comments".
Common formatting:
Bold:
**bold**Italic:
*italic*Inline code:
`code`Links:
[link text](https://example.com)Bullet lists: lines starting with
-or*Numbered lists: lines starting with
1.Block quotes: lines starting with
>
Mention a member with @
Type @ in the comment box to bring up a list of board members. Pick a member, and they will be notified of the comment. This is the fastest way to pull a teammate into a conversation on a specific card.
Mentions only work for members of the board. If a person is not on the board, they won't appear in the list.
Edit or delete your own comment
You can edit and delete comments that you wrote yourself. Hover over a comment to see the options. After editing, press Ctrl+Enter or Cmd+Enter to save the change, or click Save.
Who can comment
Anyone with access to the board can read comments. Adding comments is allowed for most board roles, including view-only and assign-only members. Observers cannot add comments. For the full breakdown of what each role can do, see the role rights article.
Related articles
Comments behave a bit differently when boards are synced with Trello or Microsoft Planner, or when cards are mirrored. These articles cover the most common questions:
Synchronizing comments with MS Planner — what syncs and what doesn't between Placker and Microsoft Planner.
Mirrored comments assigned to other members in Trello — why a mirrored comment can show up under a different member.
How do I assign comments or changes made to the correct user — making sure comments and changes show up under the right author.