Accessible hyperlinks allow individuals that use screen readers to quickly identify where the hyperlink will take the individual without having to rely on the surrounding text.
Users, including users with visual disabilities, must be able to perceive content on the page. Color cannot be used as the only visual means of conveying information.
The Rich Content Editor is the component of Canvas where you type and format your text (and insert images, etc.). It's an important feature in Canvas and is used for creating announcements, assignments, quizzes, discussions, pages, and more.