What do you use as a Glossary?

I've used icons with Glossary as the alt text, full word buttons, even listed at the bottom of a TOC. Usually, keep the back/next buttons separate from the rest of the buttons when possible. currently from left to right at the top of the course window, we are using "Home" "Audio On/Off" "Glossary" "Help" "Back" "Next" and have no complaints.

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