A screen reader is an assistive technology that helps people with vision impairment to access and interact with websites or applications through touch or audio. However, there are some limitations with screen readers. For example, screen readers do not know what the – symbol represents, whether it is a minus sign, hyphen, en dash or em dash, and will not read it. So, when you are creating content for your courses, it is always a good practice to spell out the word and any abbreviations or make a reference to your abbreviation when used for the first time. Read More About Accessibility Tip on Dashes and Hyphens