I've just found that the Glossary pop-up window will display and follow links. This is handy for routing users to deeper sources such as online dictionaries. In my case, the online English-Chinese-English dictionaries I use link returned terms. I can simply copy and paste these terms to build my glossary and my students can choose whether to look at only the Chinese gloss in the pop-up window or click the gloss and go to the online dictionary for more information.
Unfortunately, the links open in the current window. Someday it would be nice to be able to configure these links as a class rather than as instances.