Most units have Terms to Know and a glossary link. Each class (the Keyboarding classes do not have a glossary) with a glossary has a link within the units to that glossary page. When you see this icon: , Video Production/Communications Vocabulary, you should probably write them in your notes and then look them up in the class glossary. It's important to know the "lingo" of the discipline, and in some cases, the terms might have meanings outside the discipline that are different that the meaning within the class.