Add and print comments in Keynote on Mac
You can add comments to text, objects, graphs, table cells and slides. A small square appears next to text (which is also highlighted) to indicate a comment is attached. Comments attached to shapes are also indicated by a small square. Comments in table cells are indicated by a triangle in the corner of the cell. When you don’t want comments to be visible, you can hide them, and you can print a presentation with or without comments.
When multiple people are working on a presentation, each person’s comments appear in a unique colour and include their author name. Anyone can reply to a comment, which is especially useful if you’re collaborating — you can add a comment and with back-and-forth replies, have a conversation in real time.
Note: Comments aren’t visible in printed presentations unless you select that printing option.
Add, edit or delete a comment
You can add and edit your own comments, and anyone can delete a comment.
Select text, or click an object or a table cell, then click
in the toolbar.Note: If you click the background of the slide (so that nothing is selected), you can add a comment to the slide that always stays open. You can resize the comment and reposition it on the slide. Others can’t reply to this type of comment.
Type your comment, then click Done (or click outside the comment).
To view, edit or delete your comment, do one of the following:
Open a comment: Click the comment marker (or move the pointer over the highlighted text).
Edit a comment: If you’re the comment’s author, open the comment, click in the text, then type.
If there are replies to your comment, you can’t edit the original comment by clicking its text. Instead, move the pointer over the time stamp to the right of your name, at the top of the comment. When the down arrow appears, click it, select Edit Comment, then make your changes.
Delete a comment: Click Delete at the bottom of the comment. If there are replies to the comment, this action deletes the entire conversation. You can delete an individual reply only if you’re the author of the reply or the presentation owner.
If the comment is on the slide background, move the pointer over the comment, then click Delete.
Change the size of comment text
Choose Keynote > Settings (from the Keynote menu at the top of your screen).
Click General.
Click the Text Size pop-up menu, then select a size.
Review comments
Click the comment marker (or move the pointer over the highlighted text).
Do any of the following:
Review a comment or conversation: Scroll through the text. If a comment is truncated, click Show More. If replies are hidden, click “View [n] more replies.”
Go to the next or previous comment (or highlight): Click the arrows at the bottom of a comment.
If the comment is on the slide background, move the pointer over the comment, then click the arrows.
Reply to a comment or edit your reply
Anyone you share the presentation with (by sending them a copy or inviting them to collaborate with editing permission) can reply to a comment.
Click the comment marker (or move the pointer over the highlighted text).
Do any of the following:
Add a reply: Click Reply at the bottom of the comment, type your reply, then click Done. You can reply as many times as you like.
Edit your reply: Move the pointer over the time stamp (to the right of your name) for the reply you want to edit. When the down arrow appears, click it, then choose Edit Reply. Make your changes then click Done.
Delete a reply: Move the pointer over the timestamp to the right of your name (or if you’re the presentation owner, the person’s reply you want to delete). When the down arrow appears, click it, then select Delete Reply.
Delete a conversation
Click the comment marker (or move the pointer over the highlighted text), then click Delete at the bottom of the conversation.
Show or hide comments
Do one of the following:
Click
in the toolbar, then choose either Show Comments or Hide Comments.Choose View > Comments > Show Comments or Hide Comments (from the View menu at the top of your screen).
If you send your presentation to someone who opens it on an iPhone or iPad, it may open in reading view. To add and edit comments, the recipient must tap 
at the top of the screen.
Print comments
When you print a presentation with comments included, the comments appear in a column on the left side of the page and numbered flags appear on each slide next to the corresponding text and objects. If there are more comments than will fit in the left column, the comments continue on one or more additional pages.
Select File > Print (from the File menu at the top of your screen).
In the pop-up menu below the page selection controls, choose Keynote.
If you don’t see the pop-up menu, click Show Details at the bottom of the print dialogue.
Click the Slide layout, then select the “Include comments” tick box.
Click Print.
You can also export your presentation as a PDF and include the comments (see Export to PowerPoint or another file format).
For more information about printing and print options, see Print a presentation.