Click the Comment tab in the upper right corner to open up the pull-down menu.
Click the Sticky Note icon.
Select the location you want to place the comment and left-click to make the Sticky Note appear. Then type your comments in the comment field.
Note: Each comment will appear with a Log-in Name & time stamp.
To spell-check your comments, highlight the word(s) and right-click to check spelling.
To reply to previous comments, right-click the highlighted text and select Reply.