How To InstructionsAdd a note�śComments” include notes, highlighting, and any other markup that you add to a PDF document. A note is the most commonly used comment.1.To display the Commenting toolbar, right-click (Windows) or Control-click (Mac OS) the toolbar area, and make sure that Commenting is selected.2.Click the Note Tool .3.Click in the document where you want to add a note comment, and then type your comment in the pop-up window.4.After you type the note, click the close box in the pop-up window, or click anywhere outside the pop-up window to leave it open.You may also want to:Select, move, and delete commentsReview and Comment Topics Adding note comments in complete Help