• A Notes Pane in a document, PowerPoint slide, web page, or other file containing numerous pages, worksheets, or other data provides for quick remarks on a given page.
• The Notes pane is where you can add supplementary material to a presentation that doesn't appear on the slides. If you have a lot of notes, you might want to make essential words bold so you can see them easier, or use a lower font size.
• Bold, italic, underlines, and superscripts/subscripts can all be displayed in the Notes window. You have the option of using numbered or bulleted lists.
• From the margin, you may also change the alignment (left, centre, or right) and the indentation.
• Notes The speaker's notes pane gives area for adding speaker's notes, which can be quite useful to the presenter when presenting. You can also write any information you like about the presentation or a specific slide.

Read More: How can you create a new presentation?