Overview: Creating accessible Office files
Because files are often viewed electronically, now, it’s important for that content to be accessible to people with disabilities. Office has several built-in features in both computer-based programs and Web Apps that you can use to increase the accessibility of your files.
Learn more about creating accessible content
Note The video shows the Office 2010 user interface (UI), but it still gives you a good idea of how the features still work in Office 2013.