on the Social tab of the ribbon shows all the comments added to the current workboard. In Private Mode, it displays only your private comments. In Public Mode, it shows all the comments added to the workboard by other workboard users.The Show button on the Social tab of the ribbon shows all the comments added to the current workboard. In Private Mode, it displays only your private comments. In Public Mode, it shows all the comments added to the workboard by other workboard users.
Click 
to switch to Private Mode or 
to switch to Public Mode. Then, click .
Clicking again hides the comments.