I use the horizontal rule in the rich text editor frequently when I want to break up instructions or separate a topic from a response in a discussion. I am able to do so by using html code to add it in. It would be nice if it was an option in the rich content editor, such as in the option bar. In other text editors that I use, it is an option. Since most teachers don't usually edit their content in html, that would be a handy little feature to have! Thank you for voting up!
This idea has been developed and deployed to Canvas