Immersive Reader in One Note

Immersive Reader, included in One Note Learning Tools, is a full screen reading experience to increase readability of content in OneNote documents.
Immersive reader provides tools that read text out loud, break it into syllables, and increase spacing between lines and letters.
Learning Tools is an add-on that is not found in the basic version of OneNote. You need to download it for free from the Microsoft Learning Tools website.
For OneNote 2013 or 2016, open OneNote, then select Learning Tools > Immersive Reader.For OneNote for Windows 10, Mac, or iPad, open OneNote, then select View > Immersive Reader.

Adjust voice settings. Select the play button to listen.
Adjust text size, spacing, colors and more
Adjust number of lines to improve visibility