How to hide/display comment indicators

When you add the comment in Excel cell, the little red triangle is being displayed:

To hide/display comments in Excel, do the following:

   1.   On the File tab, click the Options button:

   2.   In the Excel Options dialog box, on the Advanced tab, scroll down to the Display section and choose the option:

• No comments or indicators to hide indicators:
  
• Indicators only, and comments on hover to display all indicators like a little red triangle and display the comment only when you open it
• Comments and indicators to display indicators and comments always displayed:
  

Notes:

• To display/hide all comments, on the Review tab, in the Comments group, click Show All Comments:
  
• To display an individual comment, click the cell that contains the comment, and then on the Review tab, in the Comments group, click Show/Hide Comment.

  You can also right-click the cell and then click Show/Hide Comments on the shortcut menu.

  

See also this tip in French: Comment masquer / afficher les indicateurs de commentaire.