Let's add a comment. If you share your map with other users, they can also add comments and you'll see their cursors in real time.
1. Click the Comment tool.
2. Zoom out and click close to the IHE Delft building.
3. Add the following comment: I'm now following the course Planning for Urban Climate Adaptation here.
Note that if you have shared your map, you can mention someone by clicking @.
4. Click 
to post the comment.
If you type ESC, the comment will be hidden and you'll just see your avatar. When someone clicks on the avatar, the comment appears and you can reply.